Chapter 3 TEST- ACTUAL

Front

What does the nucleus of an atom contain?

Back

The nucleus of an atom contains protons and neutrons.

Front

What are the basic units of matter called?

Back

The basic units of matter are called atoms.

Front

What contributes to the weight of an atom?

Back

The weight of an atom includes protons and neutrons.

Front

Which micronutrient strengthens bones and is needed by plants in acidic soil?

Back

Calcium strengthens bones and is needed by plants grown in acidic soil.

Front

What is the structure that carries genetic information?

Back

Nucleic acid is the structure that carries genetic information.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.

Front

What is an element?

Back

An element is a pure substance made of only one type of atom.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.