FINAL EXAM: review packet #3

Question 1

a hypothesis is a

Answer 1

prediction of what you think’ll happen (if then statement)

Question 2

matter is anything that

Answer 2

has mass and takes up space

Question 3

A physical property is a

Answer 3

property of matter that does not have to do with a chemical change (ex. color, hardness, boiling point, density, volume, mass, etc.)

Question 4

A chemical property is a

Answer 4

property of matter that can lead to a chemical change (ex. flammability, toxcitiy, acidity, reactivity)

Question 5

what’s the difference between a physical change and a chemical change?

Answer 5

PHYSICAL CHANGE=can be changed back to what it was before (water melting/freezing, painting something a new color

CHEMICAL CHANGE=when a substance cannot be changed back to its original form (lighting paper on fire, something rusting)

Question 6

what would you use to measure water

Answer 6

graduated cylinder

Question 7

LAW OF CONSERVATION OF MASS IS

Answer 7

matter can never be created or destroyed <3

Question 8

solids have a/n

Answer 8

defenite shape and volume

Question 9

liquids have a/n

Answer 9

indefinete shape and definete volume

Question 10

gases have a/n

Answer 10

indefiente shape and indefendante volume

Question 11

viscosity is

Answer 11

a liquids resistance to flow / how thick or thin a liquid is

Question 12

high viscosity liquid

Answer 12

honey (flows slower)

Question 13

low viscosity liquid

Answer 13

water (flows quicker)

Question 14

what animals make thier own food

Answer 14

producers/autotrophs like plants, trees, and flowers

Question 15

how do animals who dont make their own food get energy and what are they called

Answer 15

consumers/heterotrophs like squirrels, humans, mice, etc.

Question 16

explain a predator/prety relationship

Answer 16

predators hunt and eat prey. prey gets hunted and eaten by the predators

a lion is an example of a predator and a rhino is an example of prey

Question 17

abiotic stuff

Answer 17

rocks, soil, air

Question 18

biotic stuff

Answer 18

fungus, plants, animals

Question 19

what happens to the energy at each level of an energy pyramid

Answer 19

as you move from the bottom to the top of the pyramid less and less energy is transferred. 10% of the energy goes from one level to the next.

PRODUCERS HAVE 100%, as you go from one level to the next 10% of the energy at the level before it (not 10% of the producers original energy) is transferred

Question 20

mutualism

Answer 20

both animals benefit (ex. birds living in alligators mouths and cleaning their teeth, bird gets protection and alligator gets teeth cleaned)

Question 21

commensalism

Answer 21

one animal benefits and the other is unharmed (ex. schools of fish holding onto a shark to go places, fish get rides and shark just vibes)

Question 22

parasitism

Answer 22

one animal benefits but the other (usually the host) is harmed (ex. tapeworm eating an organisms insides, it gets nutrients but the animal gets sick)`

Question 23

what is ecological succesion

Answer 23

the gradual growth of an environment over time

Question 24

order of stuff that comes in ecological succesion

Answer 24

lichens/bacteria, then moss, then grass, the small bushes and plants, small tress, lots of large trees to make a full forest :)

Question 25

group of cells working together is a

Answer 25

tissue

Question 26

an organ system is

Answer 26

a group of organ systems that work together (digestive, nervous, circulatory)

Question 27

what absorbs sunlight in a chlorplast

Answer 27

chlorophyll

Question 28

protons have a

Answer 28

+1 charge and a mass of 1 amu (atomic mass unit)

Question 29

neutrons have a

Answer 29

0 chage and a mass of 1 amu

Question 30

electrons have a

Answer 30

-1 charge and a mass of 0amu

Question 31

amoebas are

Answer 31

consumers

Question 32

organisms are all made of

Answer 32

cells <3