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7TH SEMSTER TEST FALL 22

Total questions: 62

Worksheet time: 37mins

Name
Class
Date
1.

The ability to do work or cause change describes

a)

temperature

b)

density

c)

matter

d)

energy

2.

One example of a chemical change is

a)

burning wood

b)

filtering a mixture

c)

crushing a can

d)

boiling water

3.

material that is NOT mixed with any other matter

a)

property

b)

density

c)

ratio

d)

pure

4.

Anything that has mass and takes up space is called

a)

matter.

b)

energy.

c)

heterogeneous.

d)

homogeneous.

5.

This state of matter expands to fill its container.

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

6.

Soil, a salad, and sugar water are all examples of

a)

elements.

b)

compounds.

c)

mixtures.

d)

atoms.soil

7.

One example of a physical change is

a)

burning paper.

b)

baking cookies.

c)

toasting marshmallows.

d)

dissolving salt in water.

8.

The ability to do work or cause change describes

a)

temperature.

b)

density.

c)

matter.

d)

energy.

9.

The fact that matter is not created or destroyed in any chemical or physical change is called the (a)   . (hint: do not capitalize and make sure to spell everything correctly.)

10.

The smallest unit of matter is called an _____________.

a)

atom

b)

molecule

c)

element

d)

tiny piece

11.

What is Energy?

a)

The ability to do anything

b)

The ability to cause change

c)

The investigation of nature

d)

A fact of life

12.

Energy cannot be created or destroyed.

a)

True

b)

False

13.

What is nuclear energy?

a)

Energy in the nucleus of an atom

b)

Energy in the particles of an object

c)

Energy that is carried by electromagnetic waves

d)

Energy in a system of objects

14.

What transformation occurs in a toaster?

a)

Electrical to radiant

b)

Electrical to thermal

c)

Thermal to mechanical

d)

Solar to electrical

15.
Energy due to motion is ____________ energy. 
a)
Potential 
b)
Energy
c)
Kinetic
d)
Friction
16.
What kind of energy is in a moving skateboard?
a)
Potential
b)
Kinetic
17.
What kind of energy is in a rock at the edge of a cliff?
a)
Potential
b)
Kinetic
18.
At which point is kinetic energy greatest? 
a)
W
b)
X
c)
Y
d)
Z
19.

Which Apple has the greatest Gravitational Potential Energy?

a)

Apple A

b)

Apple B

c)

Apple C

d)

Apple D

20.

Which answer choice correctly describes the roller coaster's kinetic and potential energy?

a)

The coaster has more potential energy at point 3 than at point 4.

b)

The coaster has more kinetic energy at point 3 than point 2.

c)

The potential and kinetic energy of the coaster are equal at point 4.

d)

The potential and kinetic energy of the coaster are the greatest at point 1.

21.

What is the chemical symbol for iron?

a)

I

b)

Ir

c)

Fe

d)

R

22.

Who created the periodic table?

a)

John Dalton

b)

Marie Curie

c)

Dmitri Mendeleev

23.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
24.

Malleable means...

a)

Breaks Easily

b)

Gets Hot

c)

Can be hammered into thin sheets or formed into wires.

d)

Can be bent and will not break.

25.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
26.

What does 12.011 represent?

a)

atomic mass

b)

atomic number

c)

element name

d)

chemical symbol

27.

What does the 6 represent?

a)

atomic mass

b)

atomic number

c)

element name

d)

chemical symbol

28.

What does the C represent?

a)

atomic mass

b)

atomic number

c)

element name

d)

chemical symbol

29.
How did Mendeleev arrange the elements?
a)
alphabetical 
b)
density
c)
melting point
d)
atomic mass
30.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
31.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
32.
The substances listed on the right side of a chemical equation are the
a)
Yields
b)
Reactants
c)
Products
d)
Precipitates
33.

6CO2+ 6H2O → C6H12O6 + 6O26CO_2+\ 6H_2O\ \rightarrow\ C_6H_{12}O_{6\ }+\ 6O_2  

The carbon atoms are balanced with ____ on each side of the reaction.

a)

1

b)

6

c)

2

34.

Determine whether the following equations is balanced or unbalanced. H4 + O2 ---> 2H2O

a)

Balanced

b)

Unbalanced

35.
In this image, what are the information in red is called the_______.
a)
Product
b)
Reactant
c)
Chemical Subscript
d)
Coefficient
36.
Is this balanced?...
Al + O2 --> 2Al2O3
a)
Yes!
b)
NO!
37.

a molecule made of 2 or more atoms

a)

double atom

b)

product

c)

compound

d)

reactants

38.

Increasing the ____________ will allow the particles to move faster

a)

temperature

b)

rate

c)

catalyst

d)

subscript

39.

A reaction that releases energy in the form of heat is known as . . .

a)

a synthesis reaction

b)

an exothermic reaction

c)

a decomposition reaction

d)

an endothermic reaction

40.

A reaction that absorbs energy in the form of heat is known as . . .

a)

a synthesis reaction

b)

an exothermic reaction

c)

a decomposition reaction

d)

an endothermic reaction

41.

An organism that can make its own food

a)

autobot

b)

heterotroph

c)

autotroph

d)

heterobot

42.

An organism that cannot make its own food.

a)

autobot

b)

heterotroph

c)

autotroph

d)

heterobot

43.

Location inside of a plant cell where the process of photosynthesis occurs.

a)

nodules

b)

stomata

c)

chloroplasts

d)

chlorophyll

44.

Pigment which 'fills' chloroplast. This pigment absorbs sunlight.

a)

nodules

b)

stomata

c)

chlorine

d)

chlorophyll

45.

A process plants use to turn sunlight into food: Conversion of light energy from the sun into chemical energy (stored in glucose).

a)

toxoplasmosis

b)

photosynthesis

c)

aqua-synthesis

d)

homeosynthesis

46.

A reactant in Photosynthesis

a)

PB

b)

NACL

c)

H20

d)

CO2

47.

Where do plants get the energy for photosynthesis to take place?

a)

nutrients in the soil

b)

the sun

c)

chlorophyll

d)

bee pollination

48.

What 3 things do plants need for the process of photosynthesis?

a)

Sunlight, oxygen and sugar.

b)

Water, soil and oxygen.

c)

Sunlight, carbon dioxide and water.

d)

Sunlight, soil and water.

49.

The products of photosynthesis are...

a)

glucose and oxygen

b)

carbon dioxide and water

50.

The process of photosynthesis takes place in the:

a)

Leaves of the Plant.

b)

Stem of the plant.

c)

Roots of the plant.

d)

All of the above.

51.
An environmental factor that causes a population to decrease
a)
limiting factor
b)
Condensation
c)
Decomposer
d)
Law of Conservation of Energy
52.
An environment that provides the things a specific organism needs to live, grow, and reproduce.
a)
habitat
b)
abiotic factors
c)
Carnivore
d)
Respiration
53.
All the living organisms that inhabit an environment
a)
biotic factors
b)
Omnivore
c)
population density
d)
Percipitation
54.
nonliving parts of an ecosystem
a)
abiotic factors
b)
Resources
c)
Respiration
d)
Ecosystem
55.
all the members of a species living in a particular area
a)
Population
b)
habitat
c)
Evaporation
d)
population density
56.
All the different populations that live together in an area
a)
Community
b)
Organism
c)
food chain
d)
Law of Conservation of Energy
57.

A group of food chains that overlap.

a)

Food chain

b)

Food web

c)

Producer

d)

Consumer

58.

Earth's water is always moving in a process called the

a)

water cycle

b)

tunnel

c)

flow

d)

ridge

59.

This ecosystem is very cold and it can also be considered a desert. It has a lot of snow.

a)

Tundra

b)

Rainforest

c)

Ocean

60.

Which biome is warm year-round, receives LOTS of rain, and is rich in. biodiversity?

a)

Temperate forest

b)

Temperate grassland

c)

Boreal Forest

d)

Tropical rainforest

61.

Looking at this photo, predict the type of temperature of the biome shown.

a)

Warm all year

b)

Cold all year

c)

Seasonal temperatures

62.

Which biome consists of very low precipitation and can be hot or cold? 

a)

savanna

b)

tropical rainforest

c)

tundra

d)

desert

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