Unit 1: Subunit 1 Content Vocabulary

The smallest unit into which matter can be divided without the release of electrically charged particles is (a)  

• Atom

• Molecule

• Electron

• Proton

Isotopes are atoms of the same element with different numbers of:

• Protons

• Neutrons

• Electrons

• Atomic numbers

An ion is:

• A neutral atom

• An atom or molecule with a net electric charge

• A molecule with no charge

• A type of chemical bond

Subatomic particles are the fundamental constituents of matter.

• Atoms

• Molecules

• Subatomic particles

• Compounds

Tags

NGSS.MS-PS1-1

A proton is:

• a negatively charged particle

• a positively charged particle

• a neutral particle

• a type of molecule

A neutron is:

• a positively charged particle

• a negatively charged particle

• a neutral particle

• a particle with variable charge

An electron is:

• a positively charged particle

• a negatively charged particle

• a neutral particle

• a particle with no charge

What is a valence electron?

• An electron in the outermost shell of an atom

• An electron in the innermost shell of an atom

• A proton in the nucleus of an atom

• A neutron in the nucleus of an atom

A nucleus is:

• The central part of an atom containing protons and neutrons

• A type of chemical bond

• A molecule that stores genetic information

• A type of cell organelle responsible for photosynthesis

Tags

NGSS.MS-LS1-2

What is the atomic number?

• A unique identifier for each element

• The number of protons in an atom's nucleus

• The number of neutrons in an atom's nucleus

• The number of electrons in an atom's outer shell