elements

A substance that cannot be broken down chemically into simpler substances is an....

• atom

• molecule

• element

• property

Tags

NGSS.MS-PS1-5

when important property of an element is it......... at room temperature

• state of matter

• property

• atomic #

• atomic mass unit

Tags

NGSS.MS-PS1-4

another important property of an element is the way that it.......... with other elements

• reacts

• cools

• combines

• cools

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

today we know that an...... is the smallest unit of the element that has the elements property

• molecule

• nucleus

• proton

• atom

Tags

NGSS.MS-PS1-1

The Center of an atom is it......

• core

• begining

• nucleus

• atomic #

an atoms nucleus. contains particles called protons that have a positive charge and particles called...... that have no charge

• electrons

• neutrons

• protons

• atomic mass unit

Tags

NGSS.MS-PS1-1

negatively charged particles called........ move around the nucleus

• electrons

• protons

• neutrons

• element

because an atom has a number of.......... and electrons, the atomic number has no overall charge

• electrons

• protons

• nucleus

• nutrons

The number of protons in an atom is that atoms.....

• atomic #

• atomic mass unit

• property

• element

an Adams protons and neutrons have about the same mass which is one........... or AMU

• atomic mass unit

• atomic #

• periodic table

• matter