Physical Science midterm review

The smallest unit of matter.

• element

• atom

• nucleus

Positively charged subatomic particles

• protons

• electrons

• neutrons

• nucleus

A subatomic particle with a neutral or no charge

• protons

• neutrons

• electrons

The number on the periodic table for each element that shows how many protons and electrons it contains.

• mass number

• atomic number

• valence electrons

The number of outermost electrons in the atomic structure.

• protons

• neutrons

• valence electrons

• atomic number

Tags

NGSS.MS-PS1-1

An organized diagram of all the elements.

• periodic table

• isotope notation

• lewis dot diagram

Tags

NGSS.MS-PS1-1

A negatively charged subatomic particle.

• protons

• neutrons

• electrons

Tags

NGSS.MS-PS2-3

Two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons and therefore different mass numbers.

• mass number

• isotope

• valence electron

The total number of protons and neutrons of each element.

• atomic number

• valance electrons

• mass number

Tags

NGSS.MS-PS1-1

The center of an atom that contains protons and neutrons, also where the majority of the mass of an atom is contained.

• protons

• neutrons

• electrons

• nucleus