WEEK 12 - EXAM CHEM

This number is represented by the number of protons in the atom

• Atomic Mass
• Atomic Number
• Mass Number

What is true about an atom?

• Most of the space in an atom is taken up by the nucleus
• Atoms are mostly empty space
• Atoms have no mass
• Electrons have much more mass that protons or neutrons.

Cations are ions with what kind of charge?

• positive

• negative

• neutral

Ions are charged particles.

• True

• False

Tags

NGSS.HS-PS1-3

What is an anion's charge?

• positive

• negative

• neutral

• depends on the element's charge

If an atom of nickel has a charge of +3, how many electrons does the atom have?

• 28
• 25
• 26
• 31

If an atom of oxygen has a charge of -2, how many electrons does the atom have?

• 18
• 6
• 8
• 10

How many protons, electrons, and neutrons?

• 16 protons

  16 electrons

  16 neutrons

• 16 protons

  18 electrons

  16 neutrons

• 16 protons

  14 electrons

  16 neutrons

• 32 protons

  32 electrons

  16 neutrons

Tags

NGSS.MS-PS1-1

How many protons, neutrons and electrons?

• 12 protons

  10 electrons

  10 neutrons

• 22 protons

  22 electrons

  12 neutrons

• 12 protons

  14 electrons

  10 neutrons

• 12 protons

  10 electrons

  22 neutrons

Tags

NGSS.MS-PS1-1

If an atom has 9 protons and 10 electrons it has a charge of ____.

• 0

• -1

• +1

• -2