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Evaporation is when                                                                 .
1. a substance changes from a liquid into a solid material.
2. a substance changes from a liquid to a gas (or vapor) naturally.
3. a substance changes from a gas (or vapor) into a liquid.
What are states of matter?
1. The temperature at which a liquid boils and becomes a gas.
2. A law that states that for a fixed amount of gas at a constant temperature, the volume of the gas increases as its pressure decreases and the volume of the gas decreases as its pressure increases.
3. A term used to describe a physical or chemical change in which energy is given of.
4. The physical forms in which a substance can exist; includes solid, liquid, gas, and plasma.
What is sublimation?
1. a substance used in a chemical reaction.
2. the process by which particles leave a liquid and become a gas.
3. the process by which a solid changes directly into a gas.
4. a substance made by a chemical reaction.
Compared with the Pacific Ocean, a cup of hot chocolate has                                              .
1. more thermal energy and a higher temperature.
2. less thermal energy and a higher temperature.
3. more thermal energy and a lower temperature.
4. less thermal energy and a lower temperature.
Which change in state is illustrated?
$rarr$
1. melting
2. freezing
3. evaporation
4. condensation
Which change in state is illustrated?
$rarr$
1. melting
2. freezing
3. evaporation
4. condensation
Which of the following descriptions depicts a liquid?
1. Holds its shape, fixed volume
2. Takes shape of its container and is the volume of the container
3. Takes the shape of its container, free surface and fixed volume
You can determine the concentration of acids or bases in a solution by using
1. the pH scale.
2. a salt.
3. the periodic table of elements.
4. a particle accelerator.
What causes changes in the state of matter?
1. Physical properties
2. Chemical energy
3. Temperature
Grade 6 Periodic Table and Elements