Question 1

The atomic number is the number of protons in an atom and is always...

Accepted Answer

a whole number

Answer

a whole number ratio

Answer

a decimal

Answer

a fraction

Question 2

The number of protons in a given element will...

Accepted Answer

never change

Answer

rapidly change

Answer

change often

Answer

sometimes change

Question 3

The ___________  ______________ is the weighted average of all an element's isotopes.

Accepted Answer

atomic weight

Answer

atomic mass

Answer

mass number

Answer

isotope number

Question 4

The mass number is always a whole number and is...

Accepted Answer

the number of protons + neutrons

Answer

the number of protons + electrons

Answer

the number of isotopes

Answer

the number of neutrons + electrons

Question 5

If the mass number of "Candium" is 40, how many neutrons are in a neutral atom of this element?

Accepted Answer

20

Answer

15

Answer

10

Answer

30

Question 6

Isotopes have the same number of protons and are chemically alike but ...

Accepted Answer

have different mass numbers

Answer

have different atomic numbers

Answer

have different names

Answer

have different numbers of electrons

Question 7

What are the two types of ions?

Accepted Answer

cations & anions

Answer

dogians & antions

Answer

portions & anions

Answer

cations & dogians

Question 8

A cation is a ion with a ________________ charge.

Accepted Answer

positive

Answer

negative

Answer

neutral

Answer

electric

Question 9

Which of the following are a cation?

Accepted Answer

Na+2

Answer

So-3

Answer

S-2

Answer

Na-2

Question 10

An anion is an ion that has a _________________ charge.

Accepted Answer

negative

Answer

neutral

Answer

positive

Answer

electric

Question 11

Which of the following is not an anion?

Accepted Answer

O+2

Answer

F-1

Answer

N-3

Answer

O-2

Question 12

How many protons are in C-12?  C-13?  C-14?

Accepted Answer

6, 6, 6

Answer

5, 6, 7

Answer

6, 7, 8

Answer

8, 9, 10

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