Chemistry

Question 1

n0 equation

Answer 1

n0 = atomic mass - p+

Question 2

what happens if you have a lot of n0

Answer 2

it does not change the charge (won’t make it + or -) it will make it heavier or lighter

Question 3

What are the atoms and ion for BE

Answer 3

atom
p+=4
e- = 4

ion
p+=4
e-=2

Question 4

what are the atoms and ion for F

Answer 4

atom
p+=9
e- = 9

ion
p+ = 9
e- = 10

Question 5

what charge are atoms

Answer 5

zero

Question 6

reactants (what you start with) turn into …

Answer 6

products

Question 7

give an ex of an important equation (cellular respiration) and explain it

Answer 7

c6 h12 o6+o2 (reactants (energy)
->
co2 + h2o (products)

Question 8

what are the two types of energy diagrams

Answer 8

exothermic and endothermic

Question 9

give ex of reactants -> products

Answer 9

1. eat apple, breathe oxygen ->
2. candle burns (the candlewick and wax) and oxygen (in the air) -> products are carbon dioxide gas and water vapor.

Question 10

explain the exothermic diagram and give an ex

Answer 10

starts with reactants then goes up bc of the activation energy(energy released) then goes drastically down to make the product

ex. humman eating apple (eating anything really)

Question 11

explain and give examples of the things on an exothermic graph

Answer 11

reactants (x+y) = the product you start with (ex. apple)

activation energy = putting in energy to get it out ( ex. spending energy on chewing the apple to get the product - energy of the apple

product = end result (getting protein/energy from the apple

Question 12

draw and label both graphs

Answer 12

look at notes to double check

Question 13

energy realase ex

Answer 13

hot coca -> feel warm

candy-> sugar rush

Question 14

does co2 have energy

Answer 14

no

Question 15

what normaly uses the endothermic graph

Answer 15

plants NOT HUMANS

Question 16

describe endothermic graph

Answer 16

reactants start at the bottom -> activation energy makes it go up -> product has more energy than reactants (energy absorbed below it

Question 17

ex of endothermic energy

Answer 17

plant making apple

ex. plant takes carbon + water (they don’t have any energy -> activate -> turn into sugar +oxygen

Question 18

catalyst meaning + ex

Answer 18

makes a reaction more efficently

ex. enzymes
spend money -> make money
use energy -> get energy back

Question 19

why/what makes water so important

Answer 19

bc of its shape

Question 20

draw water molecule + label

Answer 20

look at notes to double check

Question 21

explain charge of oxygen + H seperatly

Answer 21

• oxygen is slighty negative bc of electrons
• hydrogen is positive bc no elections (negative and postivies like each other (like magnets)

Question 22

polar meaning

Answer 22

top not same as the bottom - opposite charges on both sides

Question 23

draw ex of non polar atoms +label

Answer 23

check notes

Question 24

Solvent vs. Soulte

Answer 24

solvent
- something that dissolves smthn
ex. nail polish remover (dissolves nail polish)
ex. water dissolves food overnight

Solute
- gets dissolved
ex. nail polish
ex. leftover food
ex. Gatorade powder

Question 25

Solvent + Soulte = ?

Answer 25

solution ex. coffee gatorade

Question 26

why + what is the besst solvnet

Answer 26

water is the best solvent in the world because of its shape

Question 27

evaporation/freezing of water

Answer 27

water has the ability to change boiling + freezing temps

Question 28

specific heat

Answer 28

water has high specifc heat (hols heat and cold for a while ex. water for tea/coca to cool

Question 29

Cohesion

Answer 29

Surface tension ex. leaf wont go in water when dropped but rock does

Question 30

Adhesion (sticking to smthn)

Answer 30

water sticking to something ex. penny experiment rain on window dew sweat

Question 31

catalase equation

Answer 31

h2 + o2 -> o2 +h2o

Question 32

how to know if catalase is working

Answer 32

if you see bubbles slow bubbles = catalase working slow fast bubbles = catalase working fast

Question 33

ex of o2 +h2o

Answer 33

put on a cut - water soltion -> on cut -> catalse -> white + bubbly ex. good at cleaning ex. swish in mouth never bad breath again bc kills bacteria?

Question 34

is h2 + o2 bad for you

Answer 34

isn't bad if you ahve a normal amount

Question 35

what sometiems dittermines if something is good or bad for you

Answer 35

the amount you have determines that

Question 36

lipids function

Answer 36

help with moving, storing energy, regulate hormones, acting/structureal cell membranes. Examples: avocado,

Question 37

carbohydrates function

Answer 37

provides eneryg

Question 38

Amino Acids

Answer 38

Function; body protein builds +, repairs body tissues, energy source, maintain healthy skin/hair,