問題一覧
1
what happens when electrons exchange
ions form
2
why would an atom gain an electron
outer shell is more than half full
3
why would an atom lose an electron
outer shell is less than half full
4
what are ionic bonds associated with
nonliving things
5
covalent bonds
formed when atoms share electrons
6
if covalent bond has unequal sharing, the bond is considered
polar
7
if covalent bond has equal sharing, the bond is considered
nonpolar
8
are covalent bonds strong
yes
9
what kind of bonds are associated with living things
covalent
10
what are the characteristics of covalent bonds
single,double,triple
11
what is surface tension
a cluster of hydrogen atoms that form droplets
12
exergonic
release energy
13
endergonic reaction
absorbing energy
14
reversible reaction
when end product reverts back to original reactants
15
exchange reaction
2 kinds of molecules change positions
16
decomposition reaction
breaking down a molecule into a simpler form
17
what type of chemical reaction is synthesis
multiple atoms are bonded together to form a more complex structure
18
what does hydrogen bonds create
surface tension
19
what do hydrogen bonds do to water
gives it unique properties and holds the shape of large molecules like dna
20
what is a hydrogen bond
weak bond formed when hydrogen atoms are covalently bonded to another atom
21
activation
amount of energy needed to begin a chemical reaction
22
protein catalysts
speed up reactions by lowering activation energy
23
does organic compounds have carbon and hydrogen
yes
24
are organic compounds soluble
no
25
do organic compounds have electrolytes
no
26
do organic compounds use covalent bonds
yes
27
do inorganic molecules have carbon and hydrogen
no
28
are inorganic molecules soluble
yes
29
what kind of bonds do inorganic molecules use
ionic
30
what are the macromolecules
carbs,proteins,lipids,nucleic acid
31
what is the ph 0-6.9
acidic
32
what is the ph 7.1-14
basic
33
what is the ph 7
neutral
34
carbs
main source of energy and supplies building material for cells
35
what are the groups of carbs
monosaccharides,disaccharides,polysaccharides
36
what are examples of lipids
fats,oils,steroids
37
what is the most common lipid
triglyceride
38
saturated fat
carbon surrounded by hydrogen
39
unsaturated fat
carbon not surrounded by hydrogen
40
building blocks of protein
amino acids