Unit 1 Review

The largest amount of electrons the p subshell can hold is?

• 18
• 6

• 2
• 8

protons are

• negative charge, nucleus

• positive charge, shells

• positive charge , nucleus

• neutral charge, nucleus

what is an atom

• smallest part of the universe

• smallest part of a substance

• smallest part of anything

• smallest part of water

Tags

NGSS.MS-PS1-1

How many significant figures are in the number: 0.012 g

• 1
• 2
• 3
• 4

Mass Number is the

• number of protons

• number of electrons

• number of protons and electrons

• number of protons and neutrons

The 2nd shell holds a maximum of ____ electrons

• 2

• 8

• 18

• 32

Atoms of the same element with a different number of neutrons are _____

• Anions

• Cations

• isotopes

• ions

Cations ____ electrons and recieve a ____ charge

• lose; positive

• gain; positive

• gain; negative

• lose; negative

Which of the following describes a neutron?

• no charge, shells

• positive charge, nucleus

• neutral, no charge, nucleus

• negative charge, shells

True or False - When placing electrons, a shell has to be full before moving on to the next shell?

• true
• false