Question 1 The smallest unit of a compound is called a(n)

ion.

molecule.

isotope.

Question 2
Compounds are made of more than one type of element bound together in fixed ratios.

True

False

Question 3
A substance made of copper atoms and chlorine atoms combined together will have the same chemical properties as copper and chlorine individually.

True

False

Question 4
If a neutral atom loses 2 electrons, what will happen to the atom's electrical charge?

it will become positive

it will become negative

it will remain neutral

Question 5
Use the periodic table to determine the number of protons in an atom of arsenic (As).

33

74

41

Question 6
Use the periodic table to determine the atomic weight of argon (Ar).

18

40

58

Question 7
How many valence electrons does magnesium (Mg) have?

1

2

3

Question 8
What are groups on the periodic table also called, and what is the far right group of the table?

families; metals

periods; noble gases

families; noble gases

Question 9
What keeps an ionic bond held together?

gravity

the sharing of electrons

energy of valence electrons

attraction between oppositely-charged ions

Question 10
Which of the following is a diatomic molecule?

Cablank to the power of 2 minus end exponent

N2

KCl

MgCl2

Question 11
An organic compound is one that contains the element carbon.

True

False

Question 12
Carbon is unusual among the elements in that it forms very few compounds with other elements.

True

False

Question 13

Elements are composed of atoms of at least two different types.

True

False