Chemistry

Question 1

Is magnesium phospide an ionic compound

Answer 1

True

Question 2

How many atoms is a polyatomic ion composed of?

Answer 2

2 or more

Question 3

What ingredient is used in making mortar and plaster for construction?

Answer 3

Calcium Hydroxide

Question 4

An ionic compound is composed of atoms with what charge?

Answer 4

Different charges: metals and non-metals

Question 5

One electron is transferred from one sodium atom to one chlorine atom to form sodium chloride?

Answer 5

True

Question 6

What is a reactant?

Answer 6

A reactant is a pure substance that is formed in a chemical change.

Question 7

Salt (sodium chloride) is a covalent compound.

Answer 7

False

Question 8

Name all the diatomic molecules.

Answer 8

H O F Br I N Cl

Question 9

When carbon dioxide is formed, how many shared pairs of electrons are present?

Answer 9

4

Question 10

What type of compound results from the reaction of carbon with sulfur?

Answer 10

Covalent

Question 11

What type of compound would result from the reaction of cesium and fluroide?

Answer 11

Ionic

Question 12

Write a word equation for the reaction of hydrogen with oxygen to produce water.

Answer 12

Hydrogen gas + Oxygen –> Water

Question 13

Does acids have have a pH larger or less than 7.

Answer 13

Acids have a pH LESS than 7

Question 14

What taste does acids have?

Answer 14

Sour

Question 15

What feeling does bases have?

Answer 15

Slippery

Question 16

Do Bases have a ph less than or more than 7.

Answer 16

Bases have a pH MORE than 7.

Question 17

what pH does most cleaning agents have?

Answer 17

Bases = MORE than 7

Question 18

An Oxacid consists of what?

Answer 18

Hydrogen, Oxygen, and another element

Question 19

A solution is found to have an H+ concentration 10,000 lower than that of pure water. What would conclude this?

Answer 19

A basic solution with a pH of 11

Question 20

A solution with an H+ ion concentration of 1 million times greater than pure water would be:

Answer 20

Acidic and have a pH of 1

Question 21

The substance is found in coal, oil and natural gas and when burned contributes to acid percipitation.

Answer 21

S8

Question 22

The substance is colourless and and non-conducting. When combined with water, it conducts electricity. The solution turns blue litmus red.

Answer 22

HCL

Question 23

What are the properties of Acids.

Answer 23

• 0 - 6
• Sour
• Conducts electricity
• Corrosive
• Red

Question 24

What are the properites of Bases.

Answer 24

• 8 -14
• Bitter
• Conducts electricity
• Non-corrosive
• Blue

Question 25

In what type of chemical reaction will hydrocarbonate react with another element to produce carbon dioxide and water?

Answer 25

Combustion

Question 26

When Magnesium metal and nitrogen gas react together, the correct formula for the product will be:

Answer 26

Mg3N2

Question 27

K3PO4 + Fe(NO3)3 –>?

Answer 27

FePO4 + KNO3

Question 28

If a reaction produces heat, carbon dioxide gas, and water vapour, the reactants were probably:

Answer 28

CH4 + O2

Question 29

A piece of aluminum foil is placed in an aqueous solution of copper chloride. Within a few seconds, a solid brown metal appears to form and the aluminum metal appears to dissolve. This is classified as?

Answer 29

Single displacement

Question 30

Which of the following pairs of reactants is likely to produce a pure metal when the reactants react together?

Answer 30

Al + CuCl2

Question 31

Which of the following types of chemical reaction involves only ionic compounds?

Answer 31

Double replacement