The formula for calcium bromide is

• Ca₂Br₂.

• Ca₂Br.

• CaBr₂.

• CaBr⁺¹.

The name of P₂O₅ is

• phosphorus oxide.

• phosphorus pentoxide.

• diphosphorus pentoxide.

• phosphorus (V) oxygen (II).

The compound SiO₂

• is ionic.

• is an acid.

• is binary.

• is a polyatomic ion.

The element gallium

• forms covalent bonds.

• forms anions.

• forms -3 ions.

• forms +3 ions.

Which of the following compounds is not ionic?

• Al₂S₃

• SF₆

• MgO

• KCl

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-3

Which is a binary compound?

• silver nitrate

• sodium chlorite

• potassium sulfide

• ammonium sulfate

Which of the following is true?

• Metals form anions.

• Metals form cations.

• Anions are positive ions.

• Metals can form either cations or anions.

Positive ions are formed when an atom

• loses electrons.

• gains protons.

• gains electrons.

• loses protons.

Tags

NGSS.HS-PS1-2

The halogen in period 5 of the periodic table is

• magnesium.

• iodine.

• fluorine.

• strontium.

Tags

NGSS.HS-PS1-1

Which of the following is not the correct name of a monatomic ion?

• fluoride ion

• tellurium ion

• iron (II) ion

• calcium ion