True/False
Indicate whether the sentence or statement is true
or false.
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1.
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In any
chemical change, the structure of the particle does not change.
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2.
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Bubbles forming during a change is always evidence of a chemical change.
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3.
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If a
lighted splint is placed in a sample of hydrogen, the splint will go out.
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4.
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If 15
g of vinegar were added to 10 g of baking soda, a gas would be released and the mass of the products
would be less than 25 g.
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5.
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The
formula H2O means that water has twice as many hydrogen atoms as oxygen
atoms.
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6.
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Density is a measure of the amount of mass contained in a certain volume of a
substance.
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7.
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Physical properties of a substance include aspects such as colour, density, and
boiling point.
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8.
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Flame
tests are used to identify non-metallic elements.
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9.
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A
compound containing the element copper will burn with a pale green flame.
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10.
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A
chemical formula uses letters and numbers to represent the composition of a pure
substance.
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11.
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The
elements in a horizontal row on the periodic table have similar properties.
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12.
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Most
elements have melting points greater than 20°C.
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13.
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The
inert gases (noble gases) are the most reactive group of elements.
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14.
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Rutherford suggested that the atom was mainly empty space.
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15.
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A
neutron is a subatomic particle having no charge and a mass about the same as the
electron.
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16.
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The
Bohr model says that there is a small nucleus containing the positive charge and electrons in shells
around the nucleus.
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17.
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An
atom of  C contains 6 electrons, 8 protons, and 6
neutrons.
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18.
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The
mass number of an element tells the number of protons and neutrons in the nucleus.
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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19.
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During
a physical change … a. | new substances are
produced | c. | heat is always
released | b. | the particles are not
changed | d. | the products have different chemical
properties from the reactants. | | | | |
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20.
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A
block of an unknown metal has a mass of 37.3 g and a volume of 3.3 cm3. Sara was asked to
identify the metal using the chart below. Which metal is it? a. | lead (density = 11.3
g/cm3) | c. | iron (density = 7.9
g/cm3) | b. | nickel (density = 8.9
g/cm3) | d. | tin (density = 7.3
g/cm3) | | | | |
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21.
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A
block of wood 2 cm long, 3 cm wide, and 4 cm high has a mass of 25 g. What is the density of the
block? a. | 0.96
g/cm3 | c. | 4.5
g/cm3 | b. | 1.04 g/cm3 | d. | 600 g/cm3 | | | | |
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22.
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Which
of the following is not a physical property? a. | flammability | c. | density | b. | colour | d. | melting point | | | | |
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23.
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Which
of the following is not a chemical change? a. | rusting | c. | baking | b. | burning | d. | dissolving | | | | |
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24.
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A
solution may be classified as a … a. | homogeneous pure substance | c. | heterogeneous pure substance | b. | homogeneous mixture
| d. | none of the above | | | | |
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25.
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If you
were to do an experiment to verify the law of conservation of mass, which of the following would be
most important? a. | Accurately
determining the mass of the reactants and products. | c. | Choosing the amount of reactants to be used.
| b. | Selecting
reactants that were in the solid state. | d. | Selecting the length of time that you would allow the
reaction to occur. | | | | |
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26.
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Which
of the following is not part of Dalton's atomic theory? a. | All matter is made up of small particles
called atoms. | c. | All atoms of the same element are identical.
| b. | Atoms cannot be
created or destroyed. | d. | Elements react with one another without a
loss in mass. | | | | |
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27.
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Which
list is in order of increasing complexity of substances (i.e. from simple to complex)?
a. | molecule, mixture,
atom | c. | atom, mixture,
molecule | b. | atom, molecule, mixture | d. | mixture, molecule, atom | | | | |
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28.
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A
family of elements ... a. | is located in a vertical group on the periodic table.
| c. | is a group of elements related by size and
colour. | b. | is located in a horizontal row on the periodic table.
| d. | is another name for a period on the periodic
table. | | | | |
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29.
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An
unknown element has the following properties: melting point greater than 1200° C, brittle, dull
surface lustre, conducts electricity. Which of the following is true?
i. The element could be
a non-metal.
ii. The
element could be a metal.
iii. The element could be a metalloid.
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30.
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The
family of elements known as the halogens ... a. | are all gases at room temperature.
| c. | are in Group 17. | b. | are unreactive.
| d. | react with the inert gases.
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31.
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Which
of the following is not part of the particle theory? a. | All matter is made up of
atoms | c. | Particles attract each other, and are always
moving | b. | Each pure substance has its own kind of particle,
different from the particles of other pure substances. | d. | Particles at a higher temperature move faster on average
than particles at a lower temperature. | | | | |
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32.
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The
chemical formula CO2 means the molecules of this substance have... a. | two atoms of oxygen
only | b. | two atoms of
carbon and two atoms of oxygen | c. | one atom of carbon and two atoms of
oxygen | d. | two atoms of cobalt | | |
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33.
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When
drawing a Bohr diagram, how many electrons can fit on the first electron shell of an
atom?
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34.
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How
many electrons would carbon have on its second electron shell?
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Matching
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Properties and change: match each question with the correct
item. a. | physical
property | c. | physical change | b. | chemical
property | d. | chemical change | | | | |
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35.
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Water
freezes
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36.
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A
block of wood is 7.0 cm long
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37.
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Gasoline burning
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38.
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How
oxygen reacts
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Physical and chemical changes: state whether each change is a physical change or
a chemical change. a. | chemical change | b. | physical change | | | | |
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39.
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Vinegar is added to baking soda, fizzing occurs
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40.
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Rust
forms on a car
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41.
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Wet
clothes stiffen when hung on a clothesline in the winter
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42.
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Mothballs disappear
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43.
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A
light bulb glows
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Compounds and elements: match each description with the correct
item. a. | pure
substance | d. | metallic element | b. | clear colourless
solution | e. | non-metallic
element | c. | mechanical mixture | | | | |
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44.
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soil
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45.
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distilled water
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46.
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aluminum
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47.
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eyedrops
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48.
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oxygen
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Match the element with its description. The periodic
table has been included to help you.
a. | copper | f. | helium | b. | sodium | g. | silver | c. | silicon | h. | magnesium | d. | argon | i. | fluorine | e. | hydrogen | j. | calcium | | | | |
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49.
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a
costly metallic element
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50.
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an
inert (noble) gas
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51.
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a
metalloid
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52.
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a
metal of group 1
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53.
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an
alkali metal
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54.
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a
reactive non-metallic element
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55.
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an
element with similar properties to chlorine
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56.
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the
smallest atom of Group 18
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57.
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the
lightest element
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Atomic
particles: match the particle with the correct description. a. | a proton | c. | an electron | b. | a neutron | | | | |
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58.
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a
negative subatomic particle
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59.
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a
particle that gives the nucleus its charge
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60.
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a
particle that causes isotopes to exist
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61.
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the
lightest subatomic particle
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62.
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the
particle found orbiting the nucleus
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Constitution of atoms: match the subatomic particles with the
descriptions. a. | 3 electrons, 3
protons, 3 neutrons | d. | 5 electrons, 5 protons, 5
neutrons | b. | 4 electrons, 4 protons, 5
neutrons | e. | 4 electrons, 4 protons, 9
neutrons | c. | 5 electrons, 5 protons, 7
neutrons | | | | |
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63.
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an
isotope of (c)
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64.
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the
heaviest atom
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65.
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mass
of about 12 u
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66.
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a
beryllium atom
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67.
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atomic
number 4
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68.
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Match
the following items with the correct description a. | matter | e. | mixture | b. | homogeneous | f. | mechanical mixture | c. | heterogeneous | g. | solution | d. | pure substance | | | | |
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69.
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a
substance that has a uniform composition throughout
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70.
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a
homogeneous mixture of two or more substances
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71.
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a
substance made of more than one kind of particle in which the particles are not uniformly
scattered
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72.
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a
substance that has only one kind of particle
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73.
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anything that has mass and takes up space
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74.
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a
substance that has more than one kind of particle
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75.
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a
substance that does not have a uniform composition throughout
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Match
the state of matter with its description.
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76.
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matter
that has a definite volume and takes the shape of its container
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77.
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matter
that has a definite volume and a definite shape
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78.
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matter
that takes the volume and shape of its container.
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Match
the item with its correct description. a. | compound | c. | atom | b. | element | d. | molecule | | | | |
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79.
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Particles have only one type of atom
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80.
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Particles have more than one type of atom
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81.
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Particles consist of two or more atoms bonded together
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82.
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Particles consist of only one atom
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Match
the item with the correct chemical test a. | hydrogen | c. | carbon dioxide | b. | oxygen | d. | water | | | | |
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83.
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a
glowing splint placed in the gas will relight.
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84.
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a
piece of cobalt chloride paper will change from pink to blue
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85.
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this
gas will turn limewater from clear to milky
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86.
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a
burning splint placed in the gas will make a 'pop'
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Match
the term with its correct description. a. | qualitative | d. | lustre | b. | quantitative | e. | melting point | c. | viscosity | f. | boiling point | | | | |
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87.
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whether a material has a shiny surface
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88.
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the
thickness of a liquid
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89.
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an
observation that does not include numbers
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90.
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the
temperature at which a solid changes into a liquid
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91.
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the
temperature at which a liquid changes into a gas
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92.
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an
observation that includes numbers
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