basics of chemistry

Question 1

science that deals with the composition, structures and properties of matter and how matter changes under different conditions

Answer 1

chemistry

Question 2

study of substance that contain the element carbon

Answer 2

organic chemistry

Question 3

study of substances that do not contain carbon but may contain hydrogen

Answer 3

inorganic chemistry

Question 4

substance that occupies space and has mass

Answer 4

matter

Question 5

the simplest form of chemical matter and cannot be broken down into a simpler substance without a loss identify

Answer 5

element

Question 6

chemical particles from which all matter is composed, therefore all matter is made entirely of chemicals

Answer 6

atoms

Question 7

chemical combination of two or more atoms

Answer 7

molecule

Question 8

a molecule containing two atoms of the element oxygen that are united chemically in definite proportions

Answer 8

elemental molecule

Question 9

chemical combinations of two or more atoms of different elements

Answer 9

compound molecules

Question 10

those characteristics that can be determined without a chemical reaction and do not involve a chemical change

Answer 10

physical properties

Question 11

those characteristics that can only be determined by chemical reaction or the creation of a new substance

Answer 11

chemical properties

Question 12

change in form

Answer 12

physical change

Question 13

alteration in the chemical composition or makeup of the substance

Answer 13

chemical change

Question 14

release of a significant amount of heat

Answer 14

exothermic reactions

Question 15

chemical combination of matter, in definite proportions

Answer 15

pure substance

Question 16

physical combination of matter

Answer 16

physical mixture

Question 17

stable uniform blend of two or more substances

Answer 17

solution

Question 18

substance that dissolves into a solution

Answer 18

solute

Question 19

• liquids are mutually soluble, meaning they can be mixed into stable solution

Answer 19

miscible

Question 20

• liquids are not capable of being mixed into solutions

Answer 20

immiscible

Question 21

• are unstable mixtures of undissolved particles floating in a liquid

Answer 21

suspensions

Question 22

• is an unstable physical mixture of two or more substances that normally will stay blended without a special ingredient called an emulsifier

Answer 22

emulsion

Question 23

substances that act as a bridge to allow oil and water to mix, or emulsify

Answer 23

surfacants

Question 24

water-loving

Answer 24

hydrophilic

Question 25

oil-loving

Answer 25

lipophilic

Question 26

• alcohols, those that evaporate easily

Answer 26

volatile

Question 27

sweet, colorless, oily substance

Answer 27

glycerin

Question 28

special type of oil used nail polish dryer and as skin protectants

Answer 28

silicones

Question 29

compounds that contain carbon and evaporate very quickly

Answer 29

volatile organic compound

Question 30

potential hydrogen

Answer 30

pH

Question 31

negative electric charge

Answer 31

anion

Question 32

positive electrical charge

Answer 32

cation

Question 33

measures the acidity and alkalinity of substance

Answer 33

pH scale

Question 34

pH below 7 indicates an - solution

Answer 34

acidic

Question 35

a pH above indicates an - solution

Answer 35

alkaline

Question 36

all - owe their chemical reactivity to the hydrogen ion

Answer 36

acids

Question 37

all - owe their chemical reactivity to hydroxide

Answer 37

alkalis