6th grade chemistry review

Front

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

Back

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

Front

Is melting ice a chemical or physical change?

Back

Melting ice is a physical change.

Front

What are some common indicators of a chemical change?

Back

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

Front

What is an example of a physical change?

Back

An example of a physical change is condensation on a glass.

Front

What is a nonmetal?

Back

Nonmetals are elements that are typically brittle, not conductive of heat and electricity, and can gain electrons during chemical reactions.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What is the chemical formula for carbon dioxide?

Back

The chemical formula for carbon dioxide is CO₂.

Front

What is meant by 'change in state of matter'?

Back

Change in state of matter refers to the transition of a substance from one state (solid, liquid, gas) to another, such as melting or boiling.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rusting of iron.

Front

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

Back

The properties of a substance change during a chemical change because new substances are formed.