Interim Chem Assessment

What sub-atomic particle is labelled A?

• Neutron

• Electron

• Ion

• Atom

Tags

NGSS.MS-PS1-1

What sub-atomic particle is labelled B?

• Neutron

• Electron

• Ion

• Atom

Tags

NGSS.MS-PS1-1

Which atom has 4 electrons?

• Atom A

• Atom B

• Atom C

• Atom D

Tags

NGSS.HS-PS1-1

This picture best represents ___________________ atomic model.

• Thomson's

• Dalton's

• Bohr's

• Chadwick's

An oxygen atom has reacted to get a full outer shell. What is the correct charge for the ion?

• +

• -

• 2+

• 2-

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Count the electrons in this atom's outer shell. What will happen when this atom reacts?

• It will gain 2 electrons and become a 2- ion.

• It will gain 3 electrons and become a 3- ion.

• It will lose 5 electrons and become a 5- ion.

• It will gain 3 electrons and become a 3+ ion.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

This ion was formed when a magnesium atom...

• lost two outer electrons

• gained two outer electrons

• lost one outer electron

• gained 6 electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

This is a lithium atom. To form a lithium ion it must...

• Gain one electron

• Lose one electron

• Gain two electrons

• Lose two electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Sodium is a metal. It loses one electron when it reacts. The correct chemical symbol for a sodium ion would be..?

• Na⁺

• Na^-

• Na²⁺

• Na₊

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Predict the formula of the ionic compound that forms from Potassium and Chlorine

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2