Atoms

What is the smallest particle of matter?

• mass

• volume

• atom

• proton

The three particles that make up an atom are the protons, neutrons and ________.

• nucleus

• electrons

• quarks

• orbital

Tags

NGSS.MS-PS1-1

The proton has what kind of electrical charge?

• positive

• negative

• no charge

The neutron has what kind of electrical charge?

• positive

• negative

• no charge

The electron has what kind of electrical charge?

• positive

• negative

• no charge

The nucleus is the center of the atom. The two particles contained in the nucleus of the atom are protons and __________________.

• electrons

• neutrons

• core

• cloud

Around the nucleus are tiny particles that are traveling near the speed of light in a "cloud". They are the _________.

• protons

• neutrons

• electrons

TRUE or FALSE: An element is a pure substance that is made our of TWO DIFFERENT kinds of atoms.

• true

• false

The information about elements can be found where?

• The table of contents

• The Periodic Table of Elements

• The Glossary

• The Index of Elements

The atomic number of an element shows the number of positive particles in the nucleus. Those particles are called:

• protons

• neutrons

• electrons