Chemistry

Question 1

What does WHMIS stand for?

Answer 1

Workplace Hazardous Materials Information System

Question 2

What does HHPS?

Answer 2

Hazardous Household Product Symbols

Question 3

What are the ten WHMIS symbols?

Answer 3

Compressed gas, flammable material, oxidizing material, poisonous, harmful material, health hazards, BIM, corrosive material, explosive material, environmental hazards.

Question 4

What is the acronym for the ten WHMIS symbols?

Answer 4

CFOPHHBCEE

Question 5

What are the four HHPS symbols?

Answer 5

Poisonous, Corrosive, Flammable, CUP.

Question 6

What are the fire classes and the material involved?

Answer 6

Cl. A - Solids
Cl. B - Liquids
Cl. C - Electrical Equiptment
Cl. D - Metals
Cl. K - Cooking Materials

Question 7

What is the acronym for the fire extinguisher?

Answer 7

PASS

Question 8

What is matter?

Answer 8

Something that has a mass and takes up space

Question 9

What are physical properties?

Answer 9

Characteristics of a substance

Question 10

What is a physical change?

Answer 10

When the substance stays the same and undergoes an appearance change.

Question 11

What is a chemical change?

Answer 11

When a substance undergoes a change that creates a new substance.

Question 12

What are the signs of a chemical change?

Answer 12

Colour change, heat/light given off, odour produced, bubbles formed, precipitate made.

Question 13

What are three examples of a physical change? A chemical change?

Answer 13

Breaking, melting, freezing.
Rusting, burning, digesting.

Question 14

What are the four main groups of the periodic table?

Answer 14

Group 1 - Alkali Metals
Group 2 - Alkaline Earth Metals
Group 17 - Halogens
Group 18 - Noble Gases

Question 15

How many electrons can each of the orbits hold?

Answer 15

Orbit 1 - 2
Orbit 2 - 8
Orbit 3 - 8

Question 16

What is an ion?

Answer 16

An ion is a charged particle that results from when an atom gains (or loses) one or more electrons.

Question 17

What is a cation?

Answer 17

A cation is a positive ion, an atom that has lost electrons

Question 18

What is an anion?

Answer 18

An anion is a negative ion, an atom that has gained electrons.

Question 19

What type of atoms are usually cations and anions?

Answer 19

Cations are usually metals and anions are non-metals.

Question 20

What is an ionic compound?

Answer 20

A compound made up of negatively charged ions and positively charged ions.

Question 21

What is an ionic bond?

Answer 21

The attraction that holds the ions together.

Question 22

Ionic compounds have a high melting point. True or false?

Answer 22

True

Question 23

Who chooses the names of the elements?

Answer 23

The international union of pure and applied chemistry (IUPAC)

Question 24

How do you name ionic compounds?

Answer 24

The metal’s name stays the same and the non-metal changes its end to “ide”.

Question 25

How do you write formulas of ionic compounds?

Answer 25

1. Write the symbols (metal, non-metal) 2. Write the ionic charge of each ion above the symbol 3. Use the crossover rule 4. Reduce to lowest terms

Question 26

What is the formula of Magnesium Fluoride?

Answer 26

MgF2

Question 27

True or false? Some elements have more than one stable cation.

Answer 27

True

Question 28

What is the name of PbS

Answer 28

Lead (II) Sulfide

Question 29

What is the name of FeP?

Answer 29

Iron (III) Phosphide

Question 30

What is the formula for Potassium Sulfide?

Answer 30

K2S

Question 31

What is the formula for Lead (IV) Nitride?

Answer 31

Pb3N4

Question 32

What is a polyatomic ion?

Answer 32

A stable group of atoms acting together as one.

Question 33

Give two examples of polyatomic ions?

Answer 33

Nitrate - NO3 Hydroxide - OH

Question 34

What is a molecular compound?

Answer 34

A molecular compounds consists of 2 or more non-metals connected using a covalent bond.

Question 35

What is another name for electron sharing?

Answer 35

Covalent bonds

Question 36

Why do electrons transfer?

Answer 36

1. the metals hold on the outer electrons is weak 2. the attraction of the non-metal for the metal's electrons is strong 3. a full outer orbit is stable

Question 37

What is a diatomic molecule?

Answer 37

A diatomic molecule is a chemical compound that is only made up of two atoms (same or diff).

Question 38

How many diatomic molecules are there?

Answer 38

7

Question 39

"mono" is always used for the first element. True or false?

Answer 39

False

Question 40

What is the name for N2O?

Answer 40

Dinitrogen Monoxide

Question 41

What is the name for CF4?

Answer 41

Carbon Tetrafluoride

Question 42

What is the formula for dihydrogen monoxide?

Answer 42

H2O

Question 43

What is the formula for diphosphorus trisulfide?

Answer 43

P2S3