Counting Atoms, Heat transfer, and Ph/CH changes Review

Front

What is the total number of atoms in H₂SO₄?

Back

7

Front

What type of change occurs when new substances are formed?

Back

Chemical change

Front

What type of heat transfer is used by a curling iron to curl hair?

Back

Conduction

Front

Is melting ice an example of a physical or chemical change?

Back

Physical change

Front

What type of heat transfer occurs during sunbathing?

Back

Radiation

Front

What is the definition of a physical change?

Back

A change that does not alter the chemical composition of a substance.

Front

What is the definition of a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

What is conduction?

Back

The transfer of heat through direct contact between materials.

Front

What is convection?

Back

The transfer of heat through the movement of fluids (liquids and gases).

Front

What is radiation?

Back

The transfer of heat through electromagnetic waves.