Chemistry

Question 0

State of matter that has definite volume, but changeable shape

Answer 0

Liquid

Question 1

State of matter that has definite shape and volume

Answer 1

Solid

Question 2

State of matter that has changeable shape and volume

Answer 2

Gas

Question 3

What is energy in action?

Answer 3

Kinetic energy

Question 4

What is energy of position or stored inactive energy?

Answer 4

Potential energy

Question 5

What form of energy is stored in the bonds of chemical substances?

Answer 5

Chemical energy

Question 6

What form of energy results from the movement of charged particles?

Answer 6

Electrical energy

Question 7

What form of energy is directly involved in moving matter?

Answer 7

Mechanical energy

Question 8

What form of energy travels in waves or visible light, ultra violet light and x-Rays?

Answer 8

Radiant or electromagnetic energy

Question 9

Unique substances that cannot be broken down by ordinary chemical means

Answer 9

Elements

Question 10

More or less identical building blocks for each element

Answer 10

Atoms

Question 11

Lesser elements make up what percent of the body? What elements do they include?

Answer 11

3.9%; calcium, phosphorous, potassium, sulfur, sodium, chlorine, magnesium, iodine and iron

Question 12

Trace elements make up what percent of the body?

Answer 12

0.01% and they are the fuel on the enzymatic fire.

Question 13

In what model do the electrons move around the nucleus in a fixed, circular orbit?

Answer 13

The planetary model

Question 14

Atoms that undergo spontaneous decay?

Answer 14

Radioisotopes

Question 15

What is the atomic number equal to?

Answer 15

The number of protons

Question 16

What is the mass number equal to?

Answer 16

The mass of protons and neutrons

Question 17

What is the atomic weight?

Answer 17

The average of the mass numbers of all isotopes

Question 18

What is an isotope?

Answer 18

Atoms with the same number of protons but a different number of neutrons

Question 19

What is a molecule?

Answer 19

Two or more atoms held together by chemical bonds

Question 20

What is a compound?

Answer 20

a thing that is composed of two or more separate elements (dry ice CO2)

Question 21

What is a mixture?

Answer 21

Two or more components physically intermixed but not chemically bonded (Nesquick!)

Question 22

What are solutions?

Answer 22

Homogeneous mixtures of components (mixtures which have the same composition and properties throughout) like table salt dissolved in water

Question 23

What are solvents?

Answer 23

Substances present in the greatest amount (water); thing that’s doing the dissolving

Question 24

What is a solute?

Answer 24

Substance present in smaller amounts (usually salt)

Question 25

What are colloids or emulsions?

Answer 25

They are heterogeneous mixtures whose solutes do not settle out

Question 26

What are suspensions?

Answer 26

They are heterogeneous mixtures with visible solutes that tend to settle out (blood)

Question 27

What type of chemical reaction is a synthesis reaction which always involves bond formation?

Answer 27

Combination reaction (A + B --> AB)

Question 28

What type of chemical reaction breaks down molecules into smaller molecules?

Answer 28

Decomposition reaction (AB --> A+B)

Question 29

What type of chemical reaction both makes and breaks bonds?

Answer 29

Exchange reactions (AB+C --> AC+B)

Question 30

Acidic solutions are what numbers on the pH scale?

Answer 30

pH 0-6.99

Question 31

Basic solutions are what number on the pH scale?

Answer 31

7.01-14

Question 32

Neutral solutions are what number on the pH scale?

Answer 32

7.00