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| 1 | |
Which of the following are all physical properties? |
| | A) | Colour, melting point, density, and thermal conducitivity |
| | B) | Combustibility, colour, odour, and density |
| | C) | Colour, melting point, crystal shape, and toxicity |
| | D) | Ductility, electrical conductivity, combustibility, and odour |
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| 2 | |
Which of the following is not a chemical property? |
| | A) | Toxicity |
| | B) | Combustibility |
| | C) | Decomposition |
| | D) | Thermal conductivity |
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| 3 | |
Qualitative physical properties include |
| | A) | colour, odour, ductility, and density |
| | B) | colour, odour, ductility, and brittleness |
| | C) | crystal shape, malleability, solubility, and ductility |
| | D) | physical state, hardness, brittleness, and combustibility. |
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| 4 | |
Which of the following describes a chemical property? |
| | A) | Solid potassium permanganate exists at room temperature as purple crystals. |
| | B) | Hydrogen gas is extremely flammable. |
| | C) | Chlorine gas is pale green. |
| | D) | Ammonia has a strong distinct odour. |
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| 5 | |
Energy is removed during |
| | A) | condensation and freezing |
| | B) | vaporization and freezing |
| | C) | melting and condensation |
| | D) | freezing and melting |
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| 6 | |
Which of the following is a physical change? |
| | A) | Sugar is added to a cup of coffee. |
| | B) | Over time an iron swing set becomes covered with rust. |
| | C) | Frost forms on the inside of a freezer. |
| | D) | Litmus paper turns pink when exposed to acid. |
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| 7 | |
Which of the following is true? |
| | A) | Heterogeneous mixtures are also called solutions. |
| | B) | A compound is a pure substance that cannot be separated chemically into smaller substances. |
| | C) | Homogeneous mixtures are also called solutions. |
| | D) | All pure substances cannot be separated chemically into simpler substances. |
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| 8 | |
Which of the following is true? |
| | A) | Copper and carbon dioxide are both pure substances. |
| | B) | Carbon dioxide and saltwater are both pure substances. |
| | C) | Soil and copper are both pure substances. |
| | D) | Air and water are both pure substances. |
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