9-2-2015 "Chpt 1 Test"

Question 1

A solid forming a liquid is called _______ ?

Answer 1

Melting

Question 2

A solution ________ ?

Answer 2

Can be a liquid, solid, gas and is a homogeneous mixture

Question 3

The symbol and name corresponding to the factor 10^-9 is _________.

Answer 3

Nano

Question 4

Extensive properties are ________.

Answer 4

Dependent on the amount of substance

Question 5

A liquid forming a solid is called _______ ?

Answer 5

Freezing

Question 6

Is an aqueous solution of sugar a mixture?

Answer 6

Yes

Question 7

Is water turning into steam a chemical mixture?

Answer 7

Nope

Question 8

A pure substance ________?

Answer 8

Can not be separated into simpler substances by physical means

Question 9

The law of constant composition states that __________?

Answer 9

The elements forming a particular compound always combine in the same proportions.

Question 10

A vapor or gas forming a solid is called ______?

Answer 10

Deposition

Question 11

Is flammability a physical property?

Answer 11

No

Question 12

Is air a pure substance?

Answer 12

No

Question 13

Can an element be separated into simpler substance by chemical methods?

Answer 13

No

Question 14

What is the SI for density?

Answer 14

g/cm^3

Question 15

What is the SI for volume?

Answer 15

cm^3 or ml^3

Question 16

What is the difference between precision and accuracy?

Answer 16

Precision= the decimal points and significant figures

Accuracy= how correct or close to the answer it is