Question 1

What group of the periodic table do alkali metals belong to?

Accepted Answer

Group 1A

Answer

Group 2A

Answer

Group 4A

Answer

Group 3A

Question 2

Which alkali metal is the most chemically active?

Accepted Answer

Cesium (Cs)

Answer

Sodium (Na)

Answer

Lithium (Li)

Answer

Potassium (K)

Question 3

What happens when sodium reacts with water?

Accepted Answer

It forms sodium hydroxide and hydrogen gas.

Answer

It forms sodium chloride and hydrogen gas.

Answer

It forms sodium bicarbonate and carbon dioxide.

Answer

It forms sodium oxide and oxygen gas.

Question 4

What is a common property of all alkali metals?

Accepted Answer

They have one electron in their outermost energy level.

Answer

They have seven electrons in their outermost energy level.

Answer

They are all gases at room temperature.

Answer

They are all transition metals.

Question 5

What state of matter do halogens in their elemental form vary from?

Accepted Answer

Gaseous to solid state

Answer

Liquid to gas state

Answer

Solid to liquid state

Answer

Solid to gas state

Question 6

How many electrons are in the outermost energy level of halogens?

Accepted Answer

7 electrons

Answer

1 electron

Answer

2 electrons

Answer

8 electrons

Question 7

What type of charger do alkali metals typically form during chemical reactions?

Accepted Answer

Positive ions

Answer

Negative ions

Answer

Molecular compounds

Answer

Neutral atoms

Question 8

Which halogen is in a gaseous state at room temperature?

Accepted Answer

Fluorine (F)

Answer

Chlorine (Cl)

Answer

Iodine (I)

Answer

Bromine (Br)

Question 9

What is sodium used for in nuclear reactors?

Accepted Answer

As a coolant in liquid state

Answer

As a cleaning agent

Answer

As a fuel source

Answer

As a structural component

Question 10

What reaction occurs when potassium reacts with water?

Accepted Answer

It forms potassium hydroxide and hydrogen gas.

Answer

It forms potassium oxide and water.

Answer

It forms potassium chloride and gas.

Answer

It forms potassium bicarbonate and hydrogen gas.

Question 11

Which group of the periodic table do alkali metals belong to?

Accepted Answer

Group 1A

Answer

Group 2A

Answer

Group 3A

Answer

Group 4A

Question 12

What is the most active alkali metal?

Accepted Answer

Cesium (Cs)

Answer

Lithium (Li)

Answer

Sodium (Na)

Answer

Potassium (K)

Question 13

Why are sodium fires not put out with water?

Accepted Answer

Sodium reacts instantly with water

Answer

Water doesn't extinguish fire

Answer

Sodium burns too quickly

Answer

Sodium is a poor conductor

Question 14

How many electrons are in the outermost energy level of halogens?

Accepted Answer

7 electrons

Answer

8 electrons

Answer

6 electrons

Answer

5 electrons

Question 15

What are alkali metals known for forming when they react with water?

Accepted Answer

Alkaline solutions

Answer

Saline solutions

Answer

Acidic solutions

Answer

Neutral solutions

Question 16

What physical state does fluorine exist in at room temperature?

Accepted Answer

Gas

Answer

Liquid

Answer

Plasma

Answer

Solid

Question 17

What is a property of halogens regarding electrical conductivity?

Accepted Answer

Bad conductors of heat and electricity

Answer

Moderate conductors of heat

Answer

Excellent conductors of electricity

Answer

Good conductors of heat

Question 18

What do alkali metals and halogens have in common regarding their ion formation?

Accepted Answer

They are both monovalent

Answer

They are all divalent

Answer

They form covalent bonds

Answer

They do not form ions

Question 19

What is the boiling point of liquefied nitrogen?

Accepted Answer

-196°C

Answer

-50°C

Answer

-100°C

Answer

0°C

Question 20

Which element is used in nuclear reactors due to its heat conductivity?

Accepted Answer

Sodium

Answer

Silicon

Answer

Cobalt

Answer

Nitrogen