SC 8 P 8 6

An atom becomes _______ when it loses electrons.

• Positive

• Negative

• Neutral

• Invinsible

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

What is the charge of an atom that has gained one electron?

• -1

• -2

• +1

• +2

A substance that changes color when mixed with an acid or base is a(n) ___.

• indicator

• neutralizer

• corrosive

• electricity

Since some acids seemingly "eat away" certain substances, acids are ____.

• bitter

• sliipery

• corrosive

• weak

According to the pH scale, which item is more acidic than lemons?

• battery

• vinegar

• milk

• blood

A neutralization reaction will (almost) always produce...

• water & salt

• water

• salt

• water & carbon

Tags

NGSS.MS-PS1-5

__________ are used to identify the element.

• Electrons

• Periodic Table

• Protons

• Neutrons

If you change the number of neutrons, you change the __________.

• charge

• mass

• identity

Electrons are not factored into atomic mass because:

• They are so small their mass is negligible

• They're not in the nucleus

• They're too big

• They move so quickly their mass is zero

Electrons can be found in

• The protons

• The nucleus

• Electron Clouds