water

Question 1

negative charge

Answer 1

electron

Question 2

neutral charge

Answer 2

neutron

Question 3

positive charge

Answer 3

proton

Question 4

4 elements in body

Answer 4

hydrogen oxygen nitrogen carbon

Question 5

cannot be broken down to simpler

Answer 5

element

Question 6

smallest particle

Answer 6

atom

Question 7

atomic structure is made of

Answer 7

nucleus

Question 8

two or more atoms

Answer 8

molecule

Question 9

in nucleus

Answer 9

protons and neutrons

Question 10

made of two or more elements

Answer 10

compound

Question 11

outside nucleus

Answer 11

electrons

Question 12

atomic weight is made of

Answer 12

protons and neutrons

Question 13

electrons form a

Answer 13

chemical bond

Question 14

outer shell means

Answer 14

atom is full

Question 15

octet rule

Answer 15

atoms tend to gain, lose, or share electrons to make 8 until they become stable

Question 16

covalent bonds

Answer 16

2 atoms share one or more electrons

Question 17

polar covalent

Answer 17

when two atoms share electrons unequally

Question 18

nonpolar covalent

Answer 18

when two atoms share bonds equally

Question 19

ionic bond

Answer 19

when 1 atom gives one or more electrons to another atom to complete their outer shell

Question 20

water is what type of molecule

Answer 20

polar bc it is uneven in charge

Question 21

in water oxygen has what kind of charge

Answer 21

slightly negative

Question 22

in water hydrogen has what kind of charge

Answer 22

slightly positive

Question 23

water forms what kind of bonds

Answer 23

hydrogen which are covalent

Question 24

cohesion

Answer 24

attraction between molecules of the same substance like water on water

Question 25

adhesion

Answer 25

attraction between molecules of different substances like water on glass

Question 26

surface tension

Answer 26

the surface of a liquid resists and external force due to cohesion

Question 27

capillary action

Answer 27

movement of water against gravity up tubes due to adhesion and cohesion

Question 28

high heat capacity

Answer 28

it takes large amounts of energy to change temperature

Question 29

expansion upon freezing

Answer 29

solid water is less dense than liquid bc water expands upon freezing

Question 30

universal solvent

Answer 30

water polarity gives the ability to dissolve many compounds

Question 31

water happens when water meets a lipid

Answer 31

it is repelled bc water is nonpolar

Question 32

what happens when water dissociates

Answer 32

hydrogen ions H+ and hydroxide ions OH-

Question 33

acid on ph scale

Answer 33

0-7 hydrogen ions is greater than hydroxide

Question 34

how is ph scale measured

Answer 34

concentration of h ions in a solution

Question 35

base of ph scale

Answer 35

7-12 hydroxide ions are greater than hydrogen

Question 36

neutral

Answer 36

7 hydroxide ions and hydrogen are equal

Question 37

buffers dissolve life’s fluids to maintain

Answer 37

homeostasis

Question 38

organic

Answer 38

carbon and hydrogen atoms

Question 39

inorganic

Answer 39

can have one or the other SO only carbon or hydrogen

Question 40

macromolecules

Answer 40

small organic compounds that link

Question 41

4 macromolecules

Answer 41

carbohydrates, lipids, proteins, nucleic acids

Question 42

large copounds are built up from smilar molecules called

Answer 42

monomer

Question 43

polymer

Answer 43

monomer that bind to one another to form complex molecules

Question 44

polymers come together to make

Answer 44

macromolecules

Question 45

monomers link to form polymers thru chemical reactions called

Answer 45

condensation reaction or dehydration synthesis

Question 46

the breakdown of some complex molecules such as polymers happens in

Answer 46

hydrolysis