Mixing Substances

Front

What is a mixture?

Back

A combination of two or more substances where each substance retains its original properties; they are not chemically bound together.

Front

What is a substance?

Back

Matter with the same composition and properties throughout. This is also defined as a compound.

Front

Can a mixture be easily separated back into its original components?

Back

Yes, a mixture can be easily separated back into its original components.

Front

What happens during a chemical reaction?

Back

A chemical reaction occurs when two substances combine to form one or more new substances.

Front

Is lemonade a mixture?

Back

Yes, lemonade is a mixture of water, lemon juice, and sugar.

Front

Are rocks in a fish tank a mixture?

Back

Yes, rocks in a fish tank are an example of a mixture.

Front

What is an example of a reversible change?

Back

Mixing salt and water is a reversible change because the salt can be separated back out.

Front

What is an example of a non-reversible change?

Back

Baking a cake is a non-reversible change because the ingredients combine to form a new substance.

Front

What is the difference between a mixture and a compound?

Back

A mixture is a combination of substances that retain their properties, while a compound is a substance formed when two or more elements chemically bond.

Front

Can mixtures be homogeneous or heterogeneous?

Back

Yes, mixtures can be homogeneous (uniform composition) or heterogeneous (distinct, separate components).