Which statement about ions is TRUE?

• Ions are formed when atoms gain or lose neutrons.
• A cation is negatively charged.
• An atom that loses electrons is negatively charged.
• A metal will tend to lose electrons when it becomes an ion.

Which of the following will form an ion with a 2- charge?

• Ca
• Se
• Ge
• N

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is a property of an ionic compound?

• Sharing of Electrons

• Involves two or more anions.

• Involves a metal and a nonmetal.

• Has electrons moving from an anion to the cation.

Tags

NGSS.HS-PS1-3

Which of the following would have the same number of electrons?

• N, Ne, F

• Al³⁺, F¹⁺, Ne

• S²⁺, Ar, K^1-

• As^3-, Kr, Rb¹⁺

Tags

NGSS.HS-PS1-1

Write the correct formula for an ionic compound formed from S^2- and Rb¹⁺.

• SRb₂
• SRb
• Rb₂S
• RbS₂

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

An anion in an ionic formula is/has

• usually a nonmetal.
• the positive ion.
• written first.
• lost electrons.

Tags

NGSS.HS-PS1-1

How many of each element in Na₂CO₃?

• Na - 2, CO - 3

• Na - 1, C - 2, O - 3

• Na - 2, C - 1, O - 3

• Na - 2, C - 3, O - 3

Tags

NGSS.MS-PS1-1

What is the formula for the compound tin (2+) cyanide (polyatomic)?

• Ti₂CN

• Sn(CN)₂

• Sn₂CN

• SnCN

Tags

NGSS.HS-PS1-2

Which of the following is TRUE for the CATION in an ionic compound?

• The electrons are transferred to the cation.
• The cation is usually a nonmetal.
• The cation is negatively charged.
• The cation is usually the first element in the formula.

What will be the charge of a bromine ion?

• +7

• -7

• -1

• +1

Tags

NGSS.HS-PS1-1