Biology Chapter 2 v2

The atom is the basic unit of matter.

• True

• False

Strong forces bind protons and neutrons together in the nucleus.

• True

• False

Tags

NGSS.HS-PS1-8

An electron is a positively charged particle found in the nucleus of an atom.

• True

• False

A chemical element is a pure substance that consists entirely of one kind of atom.

• True

• False

Ions are formed during which type of bonding?

• covalent

• ionic

• isotopic

Molecules are formed during which type of bonding?

• covalent

• ionic

• isotopic

Tags

NGSS.HS-PS1-1

An atom that gains electrons becomes ___ charged.

• positively

• negatively

• neutrally

A chemical element is a pure substance that consists entirely of one type of ___.

• atom

• buffer

• mixture

• solution

Tags

NGSS.MS-PS1-1

Atoms of the same element that have different number of neutrons in their nucleus are called

• electrons.

• isotopes.

• neutrons.

• protons.

A substance formed by the chemical combination of two or more elements in definite proportions is called a

• compound.

• formula.

• mixture.

• solution.