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Review after Check In Review

Total questions: 88

Worksheet time: 58mins

Name
Class
Date
1.
A pure substance...
a)

is an element

b)
is an element or a mixture
c)
is a compound or a mixture
d)
is a mixture
2.
Who
a)
Frank
b)
Wooly
c)
Sully
d)
Sally
3.

This picture represents which of the following?

a)

A single element

b)

Mixture of molecules

c)

mixture of elements

d)

mixture of compounds

4.
Structural differences between different chemicals can be represented in models of the particles. Which drawing BEST represents a compound?
a)
b)
c)
d)
5.
A pure substance...
a)

is an element

b)
is an element or a mixture
c)
is a compound or a mixture
d)
is a mixture
6.

This picture represents which of the following?

a)

A single element

b)

Mixture of molecules

c)

mixture of elements

d)

mixture of compounds

7.
Structural differences between different chemicals can be represented in models of the particles. Which drawing BEST represents a compound?
a)
b)
c)
d)
8.

An example of a pure substance is

a)

gold

b)

salad

c)

sweet tea

d)

electron clouds

9.

The basic building blocks of most of the matter around you.

a)

elements

b)

protons

c)

atoms

d)

electrons

10.

The center of an atom is called the

a)

proton

b)

electron

c)

neutron

d)

nucleus

11.

protons are

a)

located in the nucleus and have a positive charge

b)

located in the nucleus and have a negative charge

c)

the most important part of an atom

d)

atoms

12.

In an element

a)

there are many different substances

b)

the atoms are all the same

c)

the atoms are all different

d)

the electrons, protons and neutrons are located in the nucleus

13.

Identify the heterogeneous mixture

a)

sweet tea

b)

salad

c)

jello

d)

gold

14.

1 A substance made up of two or more chemically combined elements is —

a)

an element

b)

mixture

c)

compound

d)

solution

15.
NaHCO3 is an example of —
a)
an abbreviation
b)
a compound
c)
a mixture
d)
an element
16.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
17.

What does this illustrate

a)

Elements

b)

Compunds

c)

Mixture of Elements and Compunds

d)

Mixture of Compounds

18.
¿Qué color es? What color is this? 
a)
Es azul. 
b)
Es rojo.
c)
Es amarillo.
d)
Es verde
19.

Brass is a metal that is bright red and gold. It is formed by combining, not chemically, two elements, zinc and copper. Based on the information, how would brass be classified?

a)

an element

b)

compound

c)

mixture

d)

suspension

20.

This diagram represents a _____.

a)

Element

b)

Compound

c)

Mixture of 2 compounds

d)

Mixture of two elements

21.

Because an element can not be broken down into a simpler substance, it is considered to be

a)

a chemical impurity

b)

a chemical substance

c)

a pure substance

d)

unbreakable

22.

protons are

a)

located in the nucleus and have a positive charge

b)

located in the nucleus and have a negative charge

c)

the most important part of an atom

d)

atoms

23.

electrons are

a)

located in the nucleus and have a positive charge

b)

located in the nucleus and have a negative charge

c)

located in the electron cloud and have a negative charge

d)

located in the electron cloud and have a positive charge

24.

Identify the heterogeneous mixture

a)

sweet tea

b)

salad

c)

jello

d)

gold

25.

Identify the homogeneous mixture

a)

milk

b)

trail mix

c)

calcium

d)

sugar

26.

Which of the following is not a compound

a)

aluminum (Al)

b)

salt (NaCl)

c)

water (H2O)

d)

sugar (C6H12O6)

27.

Atoms move quickly and randomly in which state of matter?

a)

solid

b)

liquid

c)

gas

d)

none of these

28.

Atoms move freely and take the shape of the container in which state of matter?

a)

solid

b)

liquid

c)

gas

d)

none of these

29.

Atoms vibrate and packed tightly together in which state of matter?

a)

solid

b)

liquid

c)

gas

d)

none of these

30.

Carbon and oxygen combine chemically to form carbon dioxide. Carbon dioxide is

a)

an ion

b)

a nucleus

c)

a compound

d)

an atom

31.
Each column in the periodic table is called a 
a)
period
b)
group
c)
cluster
d)
unit
32.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
33.
The atoms along the staircase are called 
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
34.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
35.
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
36.
The horizontal row on the periodic table is called a
a)
group
b)
family
c)
period
d)
atomic number
37.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
38.

Metals are found on the ______________ side of the periodic table.

a)

nonmetals

b)

left

c)

right

d)

metals

39.

How many groups or families and periods does a Periodical Table have?

a)

There are 17 groups or families and 7 periods.

b)

There are 18 groups or families and 7 periods.

c)

There are 7 groups or families and 18 periods.

d)

There are 18 groups or families and 6 periods

40.

Which of the following are the three major groups of elements in the periodic table?

a)

Metals, non-metals, metalloids

b)

Metals, conductors, metalloids

c)

Metals, conductors, insulators

d)

Non-metals, conductors, insulators

41.

Which elements have more in common......elements in a group/family or elements in a period?

a)

elements in a group/family

b)

elements in a period

42.

Which elements will bond together?

a)

elements from the same family

b)

elements from the same period

c)

elements on opposite sides of the periodic table

d)

elements on the same side of the periodic table

43.

 Which of the following is an example of a physical property?

a)

flammability of a piece of paper

b)

toxicity of a solution

c)

burning of a candle

d)

color of a car

44.

Which of the following is an example of a chemical property?

a)

freezing an ice cube

b)

shape of a basketball

c)

color of the science table

d)

reactivity of sodium and water

45.

Which task in the kitchen describes only a physical change?

a)

baking a cake

b)

melting butter

c)

burning a piece of toast

d)

frying an egg

46.
Do you know my name?
a)
Julio
b)
Sergio
c)
Fonzio
d)
Mario
47.

Which part of digestion is mainly a chemical change?

a)

teeth break food into smaller pieces

b)

throat muscles push food down the esophagus to the stomach

c)

stomach acids dissolving food into nutrients

d)

intestinal cells transport nutrients into the blood

48.

What do bubbles most likely indicate in a chemical reaction?

a)

gas formation

b)

phase change

c)

temperature change

d)

precipitate formation

49.

Students performed an investigation on how aluminum cans taken to a recycle center were able to be reused. When the aluminum can is crushed, it undergoes which type of change?

a)

a physical change because the can is heated

b)

a chemical change because new metal is formed

c)

a physical change because the material remains the same

d)

a chemical change because the old aluminum can is changed into a new aluminum

can

50.

Which is the best evidence of a chemical change occurring when bread is baked?

a)

The bread is warm and soft.

b)

Steam rises from the bread after it is baked.

c)

The dough rises during baking, and its texture changes.

d)

The loaf of bread appears exactly the same before and after baking.

51.

Which is an example of a physical change?

a)

rusting iron

b)

baking a cake

c)

boiling water

d)

frying an egg

52.

Which is an example of a chemical change?

a)

boiling water

b)

ice melting

c)

iron rusting

d)

freezing water

53.

Which shows one example of a physical change and one example of a chemical change?

a)

boiling water and melting wax

b)

rusting iron and baking a cake

c)

dissolving powder and shredding paper

d)

freezing water and burning coal

54.

A chemical reaction occurs in a sealed test tube. As the results of the reaction 24 grams of product are produced. Which is most likely true?

a)

The mass of the reactants was 24 grams

b)

The mass of the reactants was less than 24 grams

c)

The mass of the reactants was more than 24 grams

55.

Which is a balanced chemical equation according to the law of conservation of mass?

a)

CH4 + O2 ---> CO2 + 2H2O

b)

CH4 +2O2 ----> CO2 + 2H2O

c)

2CH4 + O2 ----> CO2 + 2H2O

56.
What movie is this?
a)
Big Hero 6
b)
The Land Before Time
c)
The Good Dinosaur
d)
Jurassic World
57.

Which is true of any physical or chemical reaction?

a)

Mass increases

b)

Mass fluctuate

c)

Mass is conserved

58.

If a chemical reaction starts with 10 times the amount of oxygen and hydrogen atoms shown which best describes the amount of product? 2H2+O2 ----> 2H2O

a)

There would be 10 times more water molecules produced

b)

There would be 20 times more water molecules produced

c)

There would be the same amount of water molecules produces

59.

Which chemical equation correctly demonstrates the conservation of mass?

a)

KClO3 ---> KCl + O2

b)

H2O +CO2 -----> H2CO3

c)

Mg + HCl ----> H2 = MgCl2

60.

When vinegar and baking soda are combined, a mixture is produced, and gas is released. Which statement is true?

a)

The mass of the gas is equal to the mass of the vinegar and baking soda

b)

The mass of the mixture and gas is equal to the mass of the vinegar and baking soda

c)

The mass of the mixture and gas is greater than the mass of the baking soda and vinegar

61.

Which ratio of reactants to products supports the law of conservation of mass?

a)

1:1 because the mass of the reactants before the reaction is equal to the mass of the products after the reaction

b)

1:2 because the mass of the reactants is doubled during the reaction

c)

2:1 because the mass of the reaction is halved (cut in half) during the reaction

62.

In the equation below, supposed 11 grams of zinc react with 12 grams of hydrogen chloride to form 16 grams of zinc chloride and an unknown amount of hydrogen gas.


Zn + 2HCl ----> ZnCl2 + H2


Base on the law of conservation of mass, how many grams of hydrogen gas will form?

a)

1 gram

b)

7 grams

c)

10 grams

63.

3P + 5O2 ----> P410

a)

Balanced Equation

b)

Unbalanced Equation

64.
Which will most likely be a consequence as fossil fuel reserves are depleted?
a)
Pollution will increase
b)
Dependence on renewable energy will decrease
c)
The cost of gasoline will increase
d)
The demand for energy production will decrease
65.
How would the world be most affected by the depletion if trees from the environment?
a)
increased precipitation 
b)
decreased global temperature
c)
decreased precipitation
d)
increased global temperature
66.
Many communities in the US use coal to produce electricity.  One problem with using coal is that
a)
ecosystems can be damaged
b)
a very little energy is produced
c)
it contains harmful bacteria
d)
it is a very rare source
67.

What cartoon is this from?

a)

Dexter's lab

b)

my little pony

c)

Scooby-doo

d)

Animaniacs

68.
What is the advantage of the energy produced by hydroelectric power plants compared to the energy produced by fossil fuel plants
a)
Hydroelectric power plants take up less space than fossil fuel plants
b)
Hydroelectric plants use more efficient method than fossil fuel plants
c)
Hydroelectric power plants require fewer people to operate than fossil fuel plants
d)
Hydroelectric power plants use a renewable energy resource while fossil fuel plants use a nonrenewable resource
69.
Which is an implication if the increasing global population?
a)
The demand for energy will increase 
b)
Energy costs will decrease
c)
The available energy supply will increase
d)
The number of energy choices will decrease
70.
Sodium (Na) reacts with Chlorine (Cl) to make...
a)
a diatomic molecule
b)
a halogen
c)
a noble gas
d)
table salt
71.
Which energy source would most affect global transportation if it was depleted?
a)
coal
b)
petroleum
c)
natural gas
72.
Which best describes the potential of solar power for future energy use?
a)
It is not likely to be used because it pollutes the environment & contaminats drinking water supplies
b)
It is likely to be used becuase it is a renewable resource that is indefinitely available
c)
It is likely to be used because its capture and storage does not require special equipment
73.
What would most likely happen to the cost of gasoline if the supply of petroleum decreased?
a)
It would increase
b)
It would decrease
c)
It would stay the same
74.
What can citizens do to conserve current energy sources for the future?
a)
make disposable products 
b)
use new materials instead of recycled materials
c)
install solar panels to generate electricity 
d)
increase the amount of material used to package goods
75.
Which long-term effect would the depletion of fossil fuels most likely have on the environment?
a)
increased air quality
b)
increased global temperatures
c)
decreased water quality
d)
decreased plant and animal biodiversity
76.
The burning of fossil fuels has added pollution that contain sulfur atoms to the air.  These pollutants have contributed to which of the following?
a)
drought
b)
acid rain
c)
tornadoes
d)
temperature inersions
77.
Which is the most negative environmental consequences of building dams for hydroelectric power?
a)
air pollution
b)
chemical spills 
c)
water pollution 
d)
habitat destruction
78.
Which is the most likely effect of burning fossil fuels for energy production?
a)
increased air pollution
b)
decreased water pollution
c)
decreased global temperatures
d)
increased oxygen in atmosphere
79.
Which is the most likely to occur due to depletion of trees in an ecosystem?
a)
decreased runoff
b)
increased erosion
c)
decrease flooding
d)
increased biodiversity
80.
If significant amounts of fossil fuels continue to be used to support energy needs, what will be a negative impact for our planet?
a)
decreased oxygen levels, leading to lower air quality
b)
increased air pollution, leading to better human health
c)
decreased water quality, leading to increases in marine diversity
d)
increased levels of CO2, leading to warmer global climates
81.
The burning of fossil fuels affects the atmosphere by
a)
adding more heat and carbon dioxide
b)
reducing the amount of necessary heat
c)
taking water vapor out of the atmosphere
d)
putting more oxygen in the atmosphere
82.
If fossil fuels are burned w/o emission controls, which might be a problem experienced by citizens in surrounding areas?
a)
hair loss
b)
respiratory illnesses
c)
skin cancer
d)
loss of appetite
83.
Whose logo is this?
a)
AntMan
b)
Dare Devil
c)
Flash
d)
Shazam
84.
Which best describes solar energy?
a)
it can only be assessed out doors
b)
It is natural and does not cause pollution
c)
It can only be used during the day
d)
It can be captured during all hours of the day
85.
Which pollutant is openly released into the atmosphere when coal is burned to supply energy to power plants?
a)
lead
b)
mercury
c)
carbon dioxide
d)
oxygen
86.
Wind farms use turbines to generate electricity w/o using fossil fuels.  What is 1 negative consequence of using wind turbines to generate electricity?
a)
wind turbines change global weather patterns
b)
wind turbines produce excess carbon dioxide
c)
power is produced by wind farms using a nonrenewable resource
d)
developing & maintaining
87.
Who invented the telephone?
a)
Bill Gates
b)
John Dunlop
c)
Benjamin Franklin
d)
Alexander Graham Bell
88.
What is the state Insect?
a)
Honeybee
b)
Wasp
c)
Yellow Jacket
d)
Ladybug

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