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Worksheets

7th Grade Spring Review

Total questions: 125

Worksheet time: 30hrs 6mins

Name
Class
Date
1.

Which is the structure that we can't find in animal cells?

a)

Mitochondria

b)

Nucleus

c)

Cell membrane

d)

Cell wall

2.

The organelle in charge of transforming the energy of the sunlight into chemical energy (glucose)?

a)

Mitochondria

b)

Golgi bodies

c)

Chloroplast

d)

Nucleus

3.

What is the main control center of cells?

a)

Nucleolus

b)

Nucleus

c)

Golgi Body

d)

Lysosomes

4.

the basic unit of structure and function in living organisms

a)

Cell

b)

Atom

c)

Nucleus

d)

Proton

5.

regulates what goes into and out of the cell

a)

Chloroplast

b)

Cell wall

c)

Cell membrane

d)

Brain

6.

all organisms are composed of one or more cells

a)

Cell phone

b)

Cell components

c)

Cell wall

d)

Cell Theory

7.

gives structure to plant cells

a)

Cell Wall

b)

Cell membrane

c)

Cellulose

d)

Mitochondria

8.

site of photosynthesis in plant cells

a)

Nucleus

b)

Cell wall

c)

Chloroplast

d)

Chlorophyll

9.

fluid that surrounds the organelles

a)

Cytoplasm

b)

Cell

c)

Nucleus

d)

Vacuole

10.

converts energy from food into energy a cell can use

a)

Chloroplast

b)

Mitochondria

c)

Nucleus

d)

Vacuole

11.

contains genetic material and controls the use of genes; found in eukaryotic cells

a)

Vacuole

b)

Cell Wall

c)

Cell Membrane

d)

Nucleus

12.

storage area for cells; water storage in plants

a)

Vacuole

b)

Organ

c)

Organelle

d)

Mitochondria

13.

Which of the following are true?

a)

All cells come from other cells.

b)

Cells are the basic building blocks of life.

c)

All organisms are composed of one or more cells.

d)

All of the above are true.

14.

Which statement of levels of organization from simplest to most complex?

a)

cells, tissue, organs, organ system, organisms

b)

organisms, organ system, organs, tissue, cells

c)

organ, cells, tissue, organ system, organisms

d)

tissue, cells, organ system, organism, organ

15.

have a nucleus and other membrane bound organelles

a)

eukaryotic cells

b)

prokaryotic cells

c)

cytoplasm

16.

do not have a nucleus or other membrane bound organelles

a)

prokaryotic cell

b)

eukaryotic cell

c)

cytoplasm

17.

Which type of cell DOES NOT have a nucleus?

a)

Prokaryotic

b)

Eukaryotic

18.

What is an element?

a)

A substance that cannot be broken down into simpler substances by chemical means.

b)

A substance that can be broken down into simpler substances by physical means.

c)

A substance that is composed of only one type of atom.

d)

A substance that can be broken down into simpler substances by chemical means.

19.

What is a compound?

a)

A compound is a substance formed by the physical combination of two or more elements.

b)

A compound is a substance formed by the chemical combination of two or more elements in random proportions.

c)

A compound is a substance formed by the chemical combination of two or more elements in indefinite proportions.

d)

A compound is a substance formed by the chemical combination of two or more elements in definite proportions.

20.

Define physical change.

a)

A physical change is a change in which the physical properties of the substance remain the same.

b)

A physical change is a change in which the chemical composition of the substance is altered.

c)

A physical change is a change in which the physical properties of the substance are altered, and its chemical composition remains the same.

d)

A physical change is a change in which the physical properties of the substance, such as shape, size, or state of matter, are altered, but its chemical composition remains the same.

21.

What is a chemical change?

a)

A chemical change is a process that results in the formation of new substances with properties opposite to the original substances.

b)

A chemical change is a process that results in the formation of new substances without properties.

c)

A chemical change is a process that results in the formation of new substances with properties different from the original substances.

d)

A chemical change is a process that results in the formation of new substances with the same properties as the original substances.

22.

Provide an example of a chemical change.

a)

Cutting a piece of paper

b)

Mixing salt and water

c)

Burning wood

d)

Melting ice

23.

All matter is made of _________.

a)

energy 

b)

atoms 

c)

electrons 

d)

compounds 

24.

What is at the center of each atom?

a)

An electron

b)

A compound

c)

A molecule

d)

A nucleus

25.

What does the nucleus of an atom contain?

a)

Electrons and neutrons

b)

Protons and neutrons

c)

Neutrinos and positrons

d)

DNA and RNA

26.

Atoms are made up of ________________

a)

energy

b)

electrons

c)

subatomic particles

d)

gasses

27.

The subatomic particles that make up an atom.

a)

solid, liquid, gas

b)

electrons, protons, nucleus

c)

energy, protons, nucleus

d)

electrons, protons, neutrons

28.

__________ are negatively charged particles that are in the orbitals around the nucleus.

a)

protons

b)

nucleus

c)

neutrons

d)

electrons

29.

A proton has a ___________ charge.

a)

positive

b)

negative

c)

neutral

d)

massive.

30.

A neutron has _________ charge or is ________.

a)

negative ... neutral

b)

positive .... neutral

c)

no .... negative

d)

no ... neutral

31.

Which is an electron?

a)

A

b)

B

c)

C

32.

True or False

In a chemical reaction, no new atoms are created, and no atoms are destroyed.

a)

TRUE

b)

FALSE

33.

What is the right part of a chemical equation called...

2H2 + O2 --> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical Equation

34.

What is the left part of a chemical equation called?

2H2 + O2 --> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical Equation

35.

Which is NOT an indication of a chemical change?

a)

Temperature Change

b)

Shape Change

c)

Formation of a precipitate

d)

Production of light

36.

When a new substance forms as a result of a chemical reaction, what type of change has occurred?

a)

Chemical Change

b)

Physical Change

37.

What is the chemical symbol for Lithium?

a)

H

b)

He

c)

Li

d)

N

38.

The chemical symbol for an element is always represented by only 1 letter

a)

True

b)

False

39.

What are the elements found in a water molecule?

a)

Helium and oxygen

b)

Hydrogen and Oxygen

40.

A particle with NO charge is a:

a)

proton

b)

neutron

c)

electron

d)

nucleus

41.

Negatively charged particles in an atom are known as:

a)

protons

b)

neutrons

c)

electrons

42.

Together, the protons and _____________ make up almost all the mass of an atom

a)

neutrons

b)

electrons

c)

atoms

43.

______________is the number of protons in the nucleus of an atom, this defines the element:

a)

atomic mass

b)

atomic number

c)

energy level

44.

What is a tiny, negatively charged particle that moves around the outside of the nucleus of an atom?

a)

proton

b)

neutron

c)

electron

45.

______________ is a small particle in the nucleus of an atom, with no electrical charge

a)

proton

b)

neutron

c)

electron

46.

Surrounding the nucleus is a cloud-like region of moving _________________________.

a)

protons

b)

neutrons

c)

electrons

47.

The powerhouse of the cell

a)

Nucleus

b)

Golgi Complex

c)

Endoplasmic Reticulum

d)

Mitochondria

48.
The substances listed on the left side of a chemical equation are the
a)
Products
b)
Coefficients
c)
Precipitates
d)
Reactants
49.
The substances listed on the right side of a chemical equation are the
a)
Yields
b)
Reactants
c)
Products
d)
Precipitates
50.
What is the gel-like substance inside of cells called?

a)
photoplasm
b)
photosynthesis
c)
cytoskeleton
d)
cytoplasm
51.
What organelle is called the "powerhouse" of a cell?

a)
Endoplasmic Reticulum
b)
Nucleus
c)
Mitochondria
d)
Nucleolus
52.
Where are proteins made?
a)
Golgi body
b)
Mitoichondria
c)
Chromosomes
d)
Ribosomes
53.
What is the name of the genetic material that is inside the nucleus?
a)
ER
b)
ATP
c)
YOLO
d)
DNA
54.
I am a protein packaging and shipping machine! Who am I?
a)
vacuole
b)
ribosome
c)
mitochondrion
d)
golgi apparatus
55.
Directs all cell activities through the DNA located there.
a)
Lysosomes
b)
Nucleus
c)
ribosomes
d)
Mitochondria
56.
ATP is a form of energy.
a)
Passive Transport
b)
Active Transport
57.

Which of the following pictures shows a higher concentration?

a)
b)
58.
The picture  is an example of _________________.
a)
isotonic
b)
diffusion
c)
osmosis
d)
active transport
59.

Which of the following is the BEST definition for passive transport?

a)

Movement of substances through a cell membrane from a high to low concentration without the use of energy

b)

Movement of substances through a cell membrane from a low to high concentration requiring the use of energy

c)

Movement of substances through a cell membrane from a low to high concentration without the use of energy

d)

Movement of substance through a cell membrane from a high to low concentration requiring the use of energy

60.

A lysosome's main function is to...

a)

Use light energy to make food

b)

Protect the cell

c)

Break down materials

d)

Fight off infections

61.

Plant Cells, Animal Cells, or BOTH?

"Mitochondria is the only available energy

transforming organelle."

a)

Plant Cells ONLY

b)

Animal Cells ONLY

c)

BOTH Plant Cells and Animal Cells

62.

Plant Cells, Animal Cells, or BOTH?

"Nucleus stores DNA."

a)

Plant Cells ONLY

b)

Animal Cells ONLY

c)

BOTH Plant Cells and Animal Cells

63.

Plant Cells, Animal Cells, or BOTH?

"Cell wall provides structural framework."

a)

Plant Cells ONLY

b)

Animal Cells ONLY

c)

Both Plant Cells and Animal Cells

64.

Plant Cells, Animal Cells, or BOTH?

"Ribosomes build proteins."

a)

Plant Cells ONLY

b)

Animal Cells ONLY

c)

BOTH Plant Cells and Animal Cells

65.

Plant Cells, Animal Cells, or BOTH?

"Cell membrane is the only outer boundary for the

cell."

a)

Animal Cells ONLY

b)

Plant Cells ONLY

c)

BOTH

66.

Plant cells, Animal cells, or BOTH?

"Chloroplast and mitochondria essential for energy

transfer."

a)

Animal Cells ONLY

b)

Plant Cells ONLY

c)

BOTH Plant Cells and Animal Cells

67.

Plant Cells, Animal Cells, or BOTH?

"Vacuoles are used for storage"

a)

Animal Cells ONLY

b)

Plant Cells ONLY

c)

BOTH Plant Cells and Animal Cells

68.

When an atom loses an electron, it becomes a ____.

a)

positive ion

b)

negative ion

c)

neutral ion

d)

neutral atom

69.

Electrons involved in bonding between atoms are ____.

a)

valence electrons

b)

inside the nucleus

c)

closest to the nucleus

d)

positively charged

70.

What happens when chemical bonds break and new bonds form?

a)

a physical change

b)

a chemical reaction

c)

matter is destroyed

d)

surface area increases

71.

What is the chemical name for the compound with the formula Na2S?

a)

sodium fluoride

b)

magnesium sulfide

c)

lithium oxide

d)

sodium sulfide

72.

What is a double bond?

a)

a bond between two atoms

b)

one pair of electrons shared between two atoms

c)

two pairs of electrons shared between two atoms

d)

two pairs of electrons shared between four atoms

73.

Ions that are made of more than one atom are examples of ____.

a)

polyatomic ions

b)

negative ions

c)

positive ions

d)

neutral ions

74.

A chemical bond formed when two atoms share electrons is called a (an) ____.

a)

ionic bond

b)

covalent bond

c)

polyatomic bond

d)

crystal bond

75.

The substances listed on the left side of a chemical equation are the ____.

a)

products

b)

coefficients

c)

precipitates

d)

Reactants

76.

What is the greatest number of valence electrons an atom can have?

a)

2

b)

3

c)

8

d)

12

77.

A chemical reaction that absorbs energy in the form of heat is described as

a)

endothermic

b)

exothermic

c)

combustion

d)

unbalanced

78.

An ionic bond is the attraction between ____.

a)

similarly charged ions

b)

oppositely charged ions

c)

neutral ions

d)

neutral atoms

79.

A covalent bond in which electrons are shared unequally is ____.

a)

polar

b)

a double bond

c)

ionic

d)

polyatomic

80.

Magnesium bromide is an ionic compound with the chemical formula MgBr2. What does the "2" tell you?

a)

Bromide has a 2 charge.

b)

There are two magnesium ions to every bromide ion.

c)

There are two bromide ions for every magnesium ion.

d)

Bromide has a 2+ charge.

81.

A shorter, easier way to show chemical reactions, using symbols instead of words, is called a ____.

a)

chemical equation

b)

chemical formula

c)

symbol

d)

subscript

82.

CaCO3 represents a chemical ____.

a)

symbol

b)

formula

c)

subscript

d)

reaction

83.

The only sure evidence for a chemical reaction is ____.

a)

the formation of a gas

b)

a color change

c)

the production of one or more new substances

d)

changes in properties

84.

Which of the following is a balanced chemical equation?

a)

H2O2 H2O + O2

b)

2 Fe2O3 + 3 C 4 Fe + 3 CO2

c)

SO2 + O2 + 2 H2O 4 H2SO4

d)

2 Mg + HC1 MgCl2 + H2

85.

When an atom gains an electron, it becomes a (a)   ion.

86.

The attraction between a positive ion and a negative ion results in a(n) (a)   bond

87.

When electrons are (a)   between two atoms a covalent bond is formed

88.

Nitrate (NO3–), ammonium (NH4+), and carbonate (CO32–) are examples of (a)   ions.

89.

Bonds that form between two nonmetal atoms usually are (a)   bonds.

90.

Elements in Group 1 lose one electron to form ions with a (an) (a)   charge.

91.

In a chemical equation, a (an) (a)   tells you how many atoms or molecules of a reactant or a product take part in a reaction.

92.

The principle of (a)   states that during a chemical reaction, matter is not created or destroyed.

93.

Which letter represents decomposition?

a)

A

b)

B

c)

C

d)

D

94.

Which letter represents single displacement?

a)

A

b)

B

c)

C

d)

D

95.

Which letter represents synthesis?

a)

A

b)

B

c)

C

d)

D

96.

Which letter represents double displacement?

a)

A

b)

B

c)

C

d)

D

97.

What are the reactants in Equation A?

(a)  

98.

What are the products in Equation B?

(a)  

99.

What do the coefficients tell you about the ratio of the reactants in Equation B?

(a)  

100.
Fill in the blanks with coefficient:
PCl5+_ H2O→_ HCl+H3PO4
a)
4, 5
b)
1, 6
c)
3, 8
d)
2,2
101.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
d)
Left side is balanced
102.
Fill in the blanks with coefficient:
PCl5+_ H2O→_ HCl+H3PO4
a)
4, 5
b)
1, 6
c)
3, 8
d)
2,2
103.
Balance this equation
_Zn+_HCl-->_ZnCl2 +_H2
a)
1,1,2,1
b)
1,1,1,2
c)
1,2,1,1
d)
2,1,1,1
104.
Balance this equation.
_Mg + _Cl2 --> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
105.
Balance this equation
_N2 + _H2 --> _NH3
a)
1,2,3
b)
1,3,2
c)
1,1,2
d)
2,1,1
106.
How many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2 O3
a)
2
b)
6
c)
1
d)
4
107.
At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?
a)
the product is doubled
b)
the product is half the mass of the reactants
c)
the mass is the same
d)
the mass changes depending on the reaction
108.
N2 + H2 = NH4
a)
Balanced
b)
Unbalanced
109.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction. 
110.
Name the part in red:

H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Yield
d)
Subscript
111.
Name the part in red:

_2_H2 + _1_O2 -> _2_H2O
a)
Coefficient
b)
Product
c)
Yield
d)
Subscript
112.
Name the part in red:

H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Reactant
d)
Subscript
113.
Name the part in red:

H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Reactant
d)
Subscript
114.
Which number should go in the blank?
_ H2 + O2 -> 2 H2O
a)
1
b)
2
c)
3
d)
0
115.
Is this balanced?
Al + O2 → 2Al2O3
a)
Yes
b)
No
116.

What is the arrow in a chemical equation...

H2 + O2 --> H2O

a)

Reactants

b)

Products

c)

Yields

d)

Chemical Equation

117.
Which problem is balanced?
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
118.
Balance this equation:
MgCl2 --> Mg4+ Cl2
a)
It's already balanced.
b)
4MgCl2 --> Mg4+ 4Cl2
c)
4MgCl2 --> Mg4+ 5Cl2
119.
Balance this equation:
FeS + 2HCl -->
FeCl2 + H2O
a)
FeS2 + 2HCl --> FeCl2 + H2O
b)
It's already balanced
c)
FeS2 + 2HCl --> FeCl2 + H4O
d)
None of these
120.
Balance this equation:
 2Li + Cl2 -> LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li + Cl2 -> 2LiCl
121.

Match the cell theory contributor with their correct invention/discovery

a)

Discovered cells and coined the term "cell"

1.

Robert Hooke

b)

Invented the first compound microscope

2.

Hans and Zacharias Janssen

c)

Discovered red blood cells and bacteria

3.

Antoni van Leeuwenhoek

d)

Discovered that all plants are made of cells

4.

Matthias Schleiden

e)

Discovered that all animals are made of cells

5.

Theodor Schwann

122.

Match the following

a)

Janssen

1.

Invent the Microscope

b)

Hooke

2.

Named the Cell

c)

Leeuwenhoek

3.

Father of Microbiology

d)

Schleidan and Schwann

4.

Cell Theory

e)

Virchow

5.

Father of Modern Pathology

123.

Match the following

a)

A transportation system within the cell

1.

Endoplasmic Reticulum

b)

Builds Proteins

2.

Ribosome

c)

Manages the Actions of a the cell

3.

Nucleus

124.

Match the organelle to its description.

a)

Proteins are made on these small structures.

1.

Ribosomes

b)

Controls all activity in the cell (the brain) and stores DNA

2.

Nucleus

c)

The fluid that fills the cell and

keeps the organelles in place

3.

Cytoplasm

d)

Power plant of the cell. They

create energy called ATP.

4.

Mitochondrian

e)

Outer lining the cells.

Controls what goes

in and out.

5.

Cell Membrane

125.

​ (a)   are to the cell as a storage closet is to a classroom. ​ (b)   store water and other materials for the cell, much like a storage closet holds supplies for a classroom.

Choose from the below words
cell membrane
endoplasmic reticulum
nucleus
chloroplasts
lysosomes
Mitochondria
Golgi apparatus
Vacuoles

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