8th Science Vocabulary

Front

What is a solid chemical compound or element that can conduct electricity in some circumstances, but not in others?

Back

Semi-conductor

Front

What is the smallest part of a substance that cannot be broken down chemically?

Back

Atom

Front

What is a combination of two or more substances in any proportions where the substances do not combine chemically?

Back

Mixture

Front

What do you call an organism that cannot produce its own food and must obtain energy by consuming other organisms?

Back

Heterotrophs

Front

What is the term for the number of a chemical element in the periodic system that equals the number of protons in the nucleus of the atom?

Back

Atomic number

Front

What is the term for a substance made of two or more different types of atoms bonded together?

Back

Compound

Front

What is the basic unit of a chemical element?

Back

Atom

Front

What do you call a substance that can be broken down into simpler substances by chemical means?

Back

Compound

Front

What is the term for organisms that can produce their own food using sunlight or chemical energy?

Back

Autotrophs

Front

What is the term for the smallest unit of an element that retains the properties of that element?

Back

Atom