Science Flashcard on Chemical Changes

Front

What does the Law of Conservation of Mass state about matter during a chemical change?

Back

Matter is transformed.

Front

What are compounds made of?

Back

Different kinds of atoms that are chemically combined.

Front

What can be said about compounds?

Back

They can be broken down into simpler substances.

Front

What is the main difference between mixtures and pure substances?

Back

Mixtures can be physically separated but pure substances cannot be physically separated.

Front

What is a mixture?

Back

A combination of substances that are not chemically combined.

Front

What is a pure substance?

Back

A material made of only one type of particle.

Front

What is an example of a mixture?

Back

Lemonade.

Front

What is an example of a pure substance?

Back

Water.

Front

What does pH measure?

Back

The acidity or basicity of a substance.

Front

Which substance is closest to neutral on the pH scale?

Back

Milk.