Chapter 7 Vocabulary Practice

The smallest piece of an element that still represents the element - ______

• ion

• electron

• proton

• atom

Tags

NGSS.MS-PS1-1

Atomic particle with one negative charge (1-) - _______

• electron

• atom

• atomic number

• nucleus

Tags

NGSS.MS-PS1-1

Area around an atomic nucleus where an electron is most likely to be found - _______

• mass number

• neutron cloud

• electron cloud

• proton

Tags

NGSS.MS-PS1-1

Neutral particle in the nucleus of an atom - _______

• neutron

• nucleus

• isotope

• ion

Tags

NGSS.MS-PS1-1

Small area in the center of an atom in which most of an atom's mass and positive charge is concentrated - _________

• nuclear decay

• atom

• nucleus

• electron

Tags

NGSS.MS-PS1-1

Atomic particle with one positive charge - ______

• atom

• proton

• electron

• neutron

Tags

NGSS.MS-PS1-1

The number of protons in an atom of an element - ______

• ion

• average atomic mass

• atomic number

• mass number

Average mass of an element's isotopes, weighted according to the abundance of each isotope - ________

• mass number

• average atomic mass

• ion

• atomic number

Tags

NGSS.MS-PS1-1

An atom that is no longer neutral because it has gained or lost electrons - _____

• ion

• atom

• electrom

• nucleus

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Any of two or more atoms of the same element that have different numbers of neutrons - _______

• isotope

• nucleus

• atom

• proton

Tags

NGSS.MS-PS1-1