PHYSICAL AND CHEMICAL CHANGE

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties.

Front

What is a physical change?

Back

A physical change is a process that alters the appearance or form of a substance without changing its chemical composition.

Front

Give an example of a chemical change.

Back

Baking cookies is an example of a chemical change because it involves a chemical reaction that produces new substances.

Front

Give an example of a physical change.

Back

Dissolving salt in water is an example of a physical change because the salt can be recovered by evaporating the water.

Front

What happens to the properties of substances during a chemical change?

Back

The properties of substances change during a chemical change, resulting in the formation of new substances.

Front

What is a sign that a chemical change has occurred?

Back

The production of gas (bubbles) is a sign that a chemical change has occurred.

Front

What is the effect of temperature on the state of matter?

Back

Increasing temperature causes particles to move faster, which can change the state of matter, such as melting ice cream.

Front

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

Back

A physical change does not alter the chemical composition of a substance, while a chemical change results in the formation of new substances.

Front

What are some common indicators of a chemical change?

Back

Common indicators of a chemical change include color change, temperature change, gas production, and the formation of a precipitate.

Front

What is an example of a physical change that can be reversed?

Back

Freezing water to make ice is an example of a physical change that can be reversed by melting the ice.