Chemistry

Question 0

Activation energy

Answer 0

Energy that must be overcome for a chemical reaction to occur

Question 1

Acid

Answer 1

pH of less than 7

Question 2

Aeration

Answer 2

Process in which air is mixed with a liquid

Question 3

Anion

Answer 3

Negatively charged ion

Question 4

Atomic number

Answer 4

Number of protons the nucleus of an atom

Question 5

Base

Answer 5

pH of mor than 7

Question 6

Catalyst

Answer 6

Substance that changes the rate of reaction

Question 7

Cation

Answer 7

Positively charged ion

Question 8

Centrifuge

Answer 8

Device that uses rotation to separate substances

Question 9

Colloid

Answer 9

Mixed substances that are evenly dispersed

Question 10

Combustion

Answer 10

Burning with fuel, heat and oxygen

Question 11

Deposition

Answer 11

Settling of particles in a solution

Question 12

Electrolyte

Answer 12

Electrically conducive substance

Question 13

Electron

Answer 13

Elementary particle with no charge

Question 14

Entropy

Answer 14

Even distribution of a system

Question 15

Frequency

Answer 15

Number of events per unit of time

Question 16

Indicator

Answer 16

Compound added to a solution that changes color depending on acidity

Question 17

Insulator

Answer 17

Material that resists the flow of electricity

Question 18

Ion

Answer 18

Atom that has gained or lost an electron

Question 19

Ionization

Answer 19

Process of converting an atom into an ion

Question 20

Kinetics

Answer 20

Study of the rates of chemical processes

Question 21

Lattice

Answer 21

Arrangement of atoms or molecules in a crystal

Question 22

Mole

Answer 22

Measurement that contains 6.02x10^23

Question 23

Molecule

Answer 23

Neutral group of atoms held together by bonds

Question 24

pH

Answer 24

Measure of the acidity of a solution

Question 25

Precipitate

Answer 25

Formation of a solid in a solution

Question 26

Proton

Answer 26

Positive part of an atom’s nucleus

Question 27

Quark

Answer 27

Elementary particle of matter

Question 28

Reagent

Answer 28

Substance that is added to a system to get a reaction

Question 29

Sol

Answer 29

Suspension of solids in a liquid

Question 30

Solute

Answer 30

The part of the solution that is put into the solvent

Question 31

Sublimation

Answer 31

Phase transition from a solid to a gas

Question 32

Triple point

Answer 32

Temp and pressure at which three states of matter exist simultaneously

Question 33

Valence electron

Answer 33

Outermost electrons of an atom

Question 34

Viscosity

Answer 34

Measure of resistance of a fluid, or thickness

Question 35

Yield

Answer 35

Amount of a product made in a chemical reaction

Question 36

Amedeo Avogadro

Answer 36

Worked in molecular theory

Question 37

Marie curie

Answer 37

Radioactivity

Question 38

Antoine Lavoisier

Answer 38

French father of modern chemistry

Question 39

Gilbert Lewis

Answer 39

Discovered the covalent bond

Question 40

Edwin McMillan

Answer 40

First produced the transuranium element

Question 41

Dmitri Mendeleev

Answer 41

Invented the periodic table of elements

Question 42

Karl friedrich mohr

Answer 42

Known for conservation of energy principle

Question 43

Alfred Nobel

Answer 43

Inventor of dynamite

Question 44

Linus Pauling

Answer 44

Quantum chemist who won multiple NOBEL prizes

Question 45

Robert burns Woodward

Answer 45

American organic chemist