Sc 8 P 8 7

Here is a square that represents one element of the periodic table. What information is in this square of the periodic table, from top to bottom?

• average atomic mass, chemical symbol, chemical name, atomic number

• atomic number, chemical symbol, chemical name, average atomic mass

• average atomic mass, chemical symbol, chemical name, proton number

• average atomic mass, chemical symbol, chemical name, proton number

The nucleus of an atom can be described as:

• spacious and negatively charged

• dense and positively charged

• spacious and positively charged

• dense and negatively charged

Tags

NGSS.HS-PS1-8

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

What does the nucleus of an atom contain?

• Electrons and neutrons

• Protons and neutrons

• Neutrinos and positrons

• DNA and RN

Tags

NGSS.MS-PS1-1

How many protons and electrons does this element have?

• 35

• 18

• 17

• 52

Tags

NGSS.MS-PS1-1

An atom becomes _________ when it gains electrons.

• Positive

• Negative

• Neutral

• Invinsible

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

An atom becomes _______ when it loses electrons.

• Positive

• Negative

• Neutral

• Invinsible

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

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