Chemistry Mid Unit Retake Test

What is the mass number of cobalt?

• 58.9

• 27

• 31.9

• 59

Which of the following is a transition metal

• magnesium

• aluminum

• lithium

• iron

What is the name of the elements in group 1?

• alkali metals

• alkaline earth metals

• transition metals

• halogens

Which of the following is a not a solid at room temperature

• iodine

• mercury

• lithium

• carbon

The most important difference between metals and non-metals is...

• metals are all solids, non-metals are not

• metals conduct electricity non-metals do not

• metals have the same melting point, non-metals do not

• metals are all silvery, non-metals are not

How many valence electrons does aluminum have?

• 3

• 4

• 13

• 10

At atom that has gained electrons is known as...

• a cation

• an anion

• an isotope

• an acid

How many total electrons can be found in O^-2

• 18

• 16

• 14

• 8

How many lone electrons capable of bonding can be found in sulfur?

• 2

• 6

• 8

• 4

Elements in group 2 become stable by

• sharing 2 electrons

• losing 2 electrons

• gaining 2 electrons

• gaining 6 electrons