PS.5.1.2 (5.P.2.3) #2: Schoolnet

Front

What happens to the inside of an egg when it is boiled?

Back

The liquid becomes solid.

Front

What is a chemical change?

Back

A process where a new substance is formed, such as acid in the stomach digesting food.

Front

What occurs when a cold pack is activated?

Back

A chemical change occurs when the liquid and powder combine, causing the pack to become cold.

Front

What is the first step in the water cycle?

Back

Evaporation.

Front

What provides the energy for water to evaporate?

Back

Sunlight.

Front

What is an example of a new substance being formed?

Back

A candle burning.

Front

What is evaporation?

Back

The process where liquid water turns into vapor due to heat.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without changing its chemical composition.

Front

What is thermal energy?

Back

The energy that comes from the temperature of matter; it is the total energy of all the particles in an object.

Front

What is a mixture?

Back

A combination of two or more substances where each retains its own properties.