Review Q1

Front

What is a chemical property of a substance?

Back

A characteristic of a substance that can only be observed during a chemical reaction, such as reactivity with other substances.

Front

What is the chemical property of water when it reacts with sodium?

Back

Water reacts with sodium to produce sodium hydroxide and hydrogen gas.

Front

What is a group in the periodic table?

Back

A vertical column of elements that share similar chemical properties.

Front

What is a covalent bond?

Back

A type of chemical bond where two atoms share one or more pairs of electrons.

Front

What is the state of matter that has a definite volume but no definite shape?

Back

Liquid.

Front

What is the purpose of a control group in an experiment?

Back

To serve as a standard for comparison against the experimental group.

Front

What is an ionic bond?

Back

A type of chemical bond formed through the electrostatic attraction between oppositely charged ions.

Front

What is the definition of density?

Back

Density is the mass of a substance divided by its volume.

Front

What is the boiling point of water at standard atmospheric pressure?

Back

100 degrees Celsius.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.