Q: Which change in the state of water particles causes the particles to become arranged in a fixed position?

OPTIONS:
- boiling
- melting
- freezing
- evaporating
A: freezing
Q: As a sample of water turns to ice,

OPTIONS:
- new molecules are formed.
- the mass of the sample is increased.
- the arrangement of the molecules changes.
- energy is absorbed by the molecules.
A: the arrangement of the molecules changes.
Q: A pot is heated on a stove. Which process causes the metal handle of the pot to also become hot?

OPTIONS:
- combustion
- convection
- radiation
- conduction
A: conduction
Q: When sodium hydroxide reacts with a copper nitrate solution, the reaction vessel needs to be kept on ice to slow down the reaction. What best describes this reaction?

OPTIONS:
- an exothermic reaction that absorbs energy
- an exothermic reaction that releases energy
- an endothermic reaction that absorbs energy
- an endothermic reaction that releases energy
A:
an exothermic reaction that releases energy