Chemistry Quiz

Question 1

What is science

Answer 1

• a body of knowledge

- a systematic approach to discovering our physical world

Question 2

An element

Answer 2

A pure substance that cannot be broken down into simpler parts by chemical method

Question 3

A compound

Answer 3

A pure substance made of two or more different elements that are chemically combined

Question 4

A mixture

Answer 4

Matter that contains more than one kind of particle

Question 5

A pure substance

Answer 5

Matter that contains only one kind of particle

Question 6

A physical property

Answer 6

A characteristic of a substance that can be observed and measured without changing the identity of the substance.

Question 7

Eg. Physical property

Answer 7

• states of matter (only pure substances)
• colour
• texture
• appearance texture
• shape

Question 8

2 categories of physical properties

Answer 8

Qualitative + quantitative

Question 9

Qualitative

Answer 9

-Can be observed or described without detailed numerical measurement

Question 10

Eg of qualitative

Answer 10

5 senses + ductility + malleability

Question 11

Quantitative

Answer 11

Can be measured and assigned a unique numerical value

Question 12

Eg quantitative

Answer 12

Melting+boiling point, mass, volume, density, viscosity, solubility, hardness, conductivity

Question 13

Density

Answer 13

Measure of mass per volume

The slope of a mass vs. volume graph = density

Question 14

Chemical properties

Answer 14

• By mixing 2 substances together, a change occurs and a new substance is formed
• A chemical property is the ability of a substance to change or react and form a new substance.
• different chemicals have different chemical properties or reactivity

Question 15

What reacts to oxygen and Why

Answer 15

Metals because they are combustible

Question 16

What reacts to water

Answer 16

Lithium, potassium, sodium, etc. burst into flames when wet

Question 17

What substances react with acids and what do they produce

Answer 17

Carbonate substances produce carbon dioxide bubbles

Question 18

Eg. Chemical properties

Answer 18

-combustibility, toxicity, stability

Question 19

What are the five steps of the grasp method

Answer 19

G= given
R= required
A= apply formula
S= solve
P= paraphrase