Introduction to Chemistry

Question 1

A liquid or gel which contains ions and can be decomposed by electrolysis, is a definition of what?

Answer 1

An electrolyte

Question 2

Which subatomic particle has a positive charge?

Answer 2

Proton

Question 3

Which subatomic particle has a negligible mass?

Answer 3

Electron

Question 4

Each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter is a definition of what?

Answer 4

An element

Question 5

What is the charge on the common ion of Magnesium?

Answer 5

2+

Question 6

In the electrolysis of Copper (ll) Sulfate, copper is deposited at…?

Answer 6

The Cathode

Question 7

What charge would you find on an ion oxide?

Answer 7

2-

Question 8

A liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent) is a definition of what?

Answer 8

A solution

Question 9

A substance which is able to dissolve other substances is a what?

Answer 9

Solvent

Question 10

A substance dissolved in another substance, usually the component of a solution present in the lesser amount is what?

Answer 10

A solute

Question 11

Bonding in which electrons are shared is which type of bonding?

Answer 11

Covalent

Question 12

Which type of bonding would you find in Sodium Chloride?

Answer 12

Ionic

Question 13

In water where is the o+ charge found?

Answer 13

on the hydrogens

Question 14

In water where is to O- charge found?

Answer 14

On the oxygen

Question 15

Water molecules are…?

Answer 15

Polar

Question 16

What type of INTRAmolecular bonding is present in water molecules?

Answer 16

Covalent

Question 17

What is an ion?

Answer 17

A charged particle

Question 18

Hydrogen bonds are…?

Answer 18

found in water

Question 19

What is the main functional group of sugars?

Answer 19

Hydroxyl

Question 20

What are the two main functional groups of amino acids?

Answer 20

Carboxyl and Amino

Question 21

What type of organic molecules have hydroxyl groups?

Answer 21

Alcohols

Question 22

What is the correct formula for magnesium chloride?

Answer 22

MgCl2

Question 23

What is the correct formula for Iron (ll) Oxide?

Answer 23

FeO

Question 24

What is the correct formula for Copper (ll) Sulphate?

Answer 24

CuSO4

Question 25

Which charge would you find on a Calcium ion?

Answer 25

2+

Question 26

Which charge would you find on a Chlorine ion?

Answer 26

1-

Question 27

For sea plants to photosynthesise, which of these properties of water is most important?

Answer 27

Transparency

Question 28

In electrolysis, the positive electrode is called the...?

Answer 28

Anode

Question 29

In electrolysis, the negative electrode is called the...?

Answer 29

Cathode

Question 30

Which of these properties of water is crucial in the effectiveness of perspiration?

Answer 30

High Specific Heat Capacity

Question 31

What is the common ion charge on all group 1 elements?

Answer 31

1+

Question 32

Which property of water makes capillary action possible?

Answer 32

Adhesion

Question 33

A large amount of energy is required to cause water to evaporate. This property refer to which chemical principle?

Answer 33

High Specific Heat Capacity

Question 34

Which type of bond do you find in organic compunds?

Answer 34

Covalent

Question 35

Bonding involving a cation and anion is referred to as?

Answer 35

Ionic

Question 36

If a substance is hard but brittle, this usually indicates which type of bonding?

Answer 36

Ionic

Question 37

If a substance is soluble in water, this usually indicates which type of bonding?

Answer 37

Ionic

Question 38

rows of elements in the periodic table are referred to collectively as what?

Answer 38

periods

Question 39

columns of elements in the periodic table are referred to as what?

Answer 39

groups