Chapter 4.1 Test review

If the A number for Boron is 11 and the Z number is 5, how many electrons does a Boron atom have?

• 11

• 5

• 16

• 55

Isotopes are elements with the same number of protons, but a different number of..

• Electrons

• Neutrons

• Atomic numbers

• None of the above

Atoms with a charge are called...

• Isotopes

• Charged atoms

• Ions

• Molecules

Which statement about the atomic nucleus is correct?

• The nucleus is made of protons and neutrons and has a negative charge.

• The nucleus is made of protons and neutrons and has a positive charge

• The nucleus is made of electrons and has a negative charge.

• The nucleus is made of electrons and has a positive charge.

The subatomic particles found outside the nucleus of an atom:

• Neutrons

• Electrons

• Protons

• There are no subatomic particles outside the nucleus

Valence electrons determine an element's.....

• Electrical charge

• Chemical properties

• Mass

• Period

The value of A for 0-17?

• 17

• 9

• 8

• 25

How many neutrons in an element with an atomic number of 80 and an atomic mass of 201?

• 80

• 201

• 121

• 281

Oxygen's atomic number is 8. That means...

• Oxygen has 8 neutrons in its nucleus

• Oxygen has a total of 8 protons and neutrons in the nucleus

• Oxygen has 8 protons in its nucleus

• Oxygen has 8 electrons in its nucleus

The charge of a proton is:

• Positive

• Negative

• Neutral

• None of the above