Chem Unit 2 Vocab

_ The smallest unit of an element that still has the properties of that element.

• Atom

• Compound

• Molecule

• Proton

Tags

NGSS.MS-PS1-1

The positive particle found in the nucleus of an atom is called_

The neutral particle found in the nucleus of an atom is called_

Tags

NGSS.HS-PS1-8

The negative particle found outside of the nucleus is called_

Electrons that are found in the outermost energy level are called_

• Shells

• Electron Cloud

• Valence Electrons

• Quarks

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What make up protons and neutrons?

This is the number of protons of an atom and determines the chemical properties and the placement on the periodic table.

• Mass number

• Periods

• Groups

• Atomic Number

This is not on the periodic table, tells the number of protons and neutrons of an atom.

Match the following

• Isotopes

• Atoms of the same element with different number of neutrons

• Periods

• The vertical columns on the periodic table

• Groups

• The weighted average mass of the atoms in a naturally occurring sample

• Average atomic mass

• The horizontal rows on the periodic table

A charges atom is called an _

• Proton

• Isotope

• Ion

• Electron