Chemistry

Question 1

What is a displacement reaction?

Answer 1

Where a more reactive element replaces a less reactive element.

Question 2

What is an independent variable?

Answer 2

The controlled part of the investigation

Question 3

What is the dependent variable?

Answer 3

the variable being tested or measured

Question 4

What is liquid to a solid?

Answer 4

Freezing

Question 5

What is solid to liquid?

Answer 5

Melting

Question 6

what is Solid to a gas?

Answer 6

Sublimation

Question 7

What is gas to solid?

Answer 7

Reposition

Question 8

What is gas to a liquid

Answer 8

Condensation

Question 9

What is liquid to a gas?

Answer 9

Boiling/ Evaporation

Question 10

What is endothermic?

Answer 10

Where an object absorbs energy

Question 11

What is exothermic?

Answer 11

Where a thing releases energy

Question 12

What is an atom?

Answer 12

Smallest possible particle

Question 13

What is an molecule

Answer 13

Two or more atoms bonded together

Question 14

What is a element?

Answer 14

A chemical containing only one atom

Question 15

What is a compound?

Answer 15

a mix that is composed of two or more separate elements

Question 16

What is a mixture?

Answer 16

a mix of different elements which the elements are individual.

Question 17

What is a solvent?

Answer 17

the substance in which a solute dissolves to produce a homogeneous mixture.

Question 18

What is a soluble?

Answer 18

a substance that is able to be dissolved, especially in water.

Question 19

What is a insoluble?

Answer 19

a substance (solid) that will not dissolve in a solvent even after mixing

Question 20

What is a solute?

Answer 20

the substance that dissolves in a solvent to produce a homogeneous mixture

Question 21

What is the test for hydrogen?

Answer 21

The squeaky pop test

Question 22

What % of the air is nitrogen?

Answer 22

78%

Question 23

What % of the air is oxygen?

Answer 23

21%

Question 24

What % of the air is Carbon dioxide?

Answer 24

.04%