Pure Substances and Mixtures

Front

What is a pure substance?

Back

An element or a compound.

Front

Which of the following represents an element? Options: H₂O, H₂, NaCl, CaCO₃

Back

H₂

Front

Which of the following is not a compound? Options: HCl, Cl, NaCl, CO2

Back

Cl

Front

Salt has a chemical formula of NaCl. Salt is a...

Back

Compound

Front

What cannot be broken down into other substances?

Back

Element

Front

What is made up of two or more different elements that are chemically combined?

Back

Compound

Front

A combination of substances that are not chemically combined is called a(n) ____________.

Back

mixture

Front

An element is made up of only one kind of _____.

Back

atom

Front

Examples are milk and gasoline.

Back

mixtures

Front

What is salad?

Back

mixture