Matter Part 2 - Atoms and PT

What does this represent?

• An atom of sodium

• An isotope of sodium

• An atom of magnesium

• An isotope of magnesium

Tags

NGSS.MS-PS1-1

Of the 4 elements listed, which element has the greatest number of protons: calcium, iron, aluminum, fluorine

• calcium

• iron

• aluminum

• fluorine

Which element has the same valence structure as Antimony?

• Nitrogen

• Aluminum

• Lithium

• Oxygen

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

True or False: The number of protons in an atom is equal to the number of valence electrons.

• True

• False

• Not enough information

True or False: The number of protons in an atom is equal in each group.

• True

• False

• Not enough information

True or False: The atoms in the same group contain the same number of valence electrons.

• True

• False

• Not enough information

True or False: The atoms in the same period contain the same number of valence electrons.

• True

• False

• Not enough information

True or False: Group 17 and Group 1 are the most reactive groups.

• True

• False

• Not enough information

True or False: Group 17 and Group 18 are the most reactive groups.

• True

• False

• Not enough information

True or False: Group 18 is the most stable group because they have the most protons.

• True

• False

• Not enough information