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What I've Learned In 7th Grade Science So Far....

Total questions: 60

Worksheet time: 2hrs 0mins

Name
Class
Date
1.
_______________ is the amount of space an object takes up.
a)
mass
b)
volume
c)
weight
d)
density
2.

What is the volume of the two red beads?

a)

2.4 cm3

b)

4.0 cm3

c)

6.0 cm3

d)

2.0 cm3

3.
A graduated cylinder is used to measure the __________ of a liquid.
a)
temperature
b)
mass
c)
volume
d)
length
4.
The instrument pictured is used to measure the mass of an object...
a)
flask
b)
ruler
c)
balance scale
d)
triple beam balance
5.

What is the length of the object in centimeters?

a)

3.4 cm

b)

4.3 cm

c)

3.5 cm

d)

1 1/4 inches

6.

What is the volume of the liquid in this graduated cylinder?

a)

19.0 mL

b)

35.0 mL

c)

24.0 mL

d)

1.9 mL

7.

Standard measurement system based on powers of 10.

a)

Metric System

b)

US Customary

c)

Density

d)

Weight

8.

What is the basic unit of liquid volume in the metric system?

a)

gram

b)

meter

c)

Liter

d)

cm3

9.

Which tool measures length?

a)

graduated cylinder

b)

metric ruler

c)

triple-beam balance

d)

thermometer

10.

What is the scale of this graduated cylinder?

a)

10.0 mL

b)

1.0 mL

c)

0.1 mL

d)

2.0 mL

11.

What is the measurement shown on the triple-beam balance?

a)

335.0 g

b)

35.0 g

c)

3.5 g

d)

305.0 g

12.

How do you calculate density?

a)

volume divided by mass

b)

mass times volume

c)

mass divided by volume

d)

volume times mass

13.

How do you calculate the volume of a regular solid?

a)

length x width x height

b)

mass divided by volume

c)

with a triple beam balance

d)

water displacement

14.

What is mass?

a)

a measure of the amount of matter an object contains

b)

a measure of the force of gravity acting on an object

c)

the amount of space an object takes up

d)

a state in new england

15.

How do you measure the volume of an irregular solid?

a)

length x width x height

b)

water displacement

c)

mass divided by volume

d)

scan it

16.
An object with which of the following densities will float on water?
a)
0.7 g/cm3
b)
1.2 g/cm3
c)
3.5 g/cm3
d)
11.4 g/cm3
17.

Vincenza has a statue made out of a substance that has a mass of 9.65 grams and a volume of 0.5 cm3. What is the statue that Vincenza has made out of?

a)

Aluminum

b)

Gold

c)

Silver

d)

Copper

18.

What is the density of water?

a)

0.0 g/ml

b)

1.0 g/ml

c)

10.0 g/ml

d)

100.0 g/ml

19.

All matter is made up of ____________________.

a)

energy

b)

atoms

c)

electrons

d)

compounds

20.

What are the 3 subatomic particles that make-up the atom?

a)

Protons, Neutrons, and Isotopes

b)

Neutrons, Isotopes, and Electrons

c)

Positives, Negatives, and Electrons

d)

Protons, Neutrons, and Electrons

21.

The central region of an atom is called the __________________.

a)

nucleus

b)

electron cloud

c)

core

d)

center

22.

The positively charged particles of an atom are known as the _________________.

a)

electrons

b)

positrons

c)

neutrons

d)

protons

23.

Which negatively charged subatomic particle(s) would be found orbiting the nucleus?

a)

Neutrons only

b)

Electrons only

c)

Protons and Neutrons

d)

Protons and Electrons

24.

What is the definition of atomic number?

a)

the number of protons in the nucleus of each atom of an element

b)

the number of protons and neutrons in the nucleus of each atom of an element

c)

the number of neutrons in the nucleus of each atom of an element

d)

the number of protons and electrons in the nucleus of each atom of an element

25.
What is the atomic number of this atom?
a)
4
b)
5
c)
9
d)
none of the above
26.

Which of the following is a pure substance (natural or synthetic) that can't be broken down by ordinary means?

a)

Compound

b)

Element

c)

Law

d)

Molecule

27.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
28.

A substance produced when elements combine and whose properties are different from each of the elements in it is called a(n) _____________________________.

a)

element

b)

atom

c)

mixture

d)

compound

29.

Which compound has the molecular formula pictured?

a)

Ammonia - NH3

b)

Water - H2O

c)

Hydrogen Peroxide - H2O2

d)

Methane CH4

30.

Which scientific model could be used to predict the properties of an element?

a)

water cycle

b)

geologic tme scale

c)

Punnett square

d)

periodic table

31.

How are elements ordered on the modern periodic table?

a)

Alphabetical Order

b)

By their color.

c)

By their atomic mass.

d)

By their atomic number.

32.

Which item on this element square is the element symbol?

a)

Copper

b)

29

c)

Cu

d)

63.546

33.
Rows on the period table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
34.

Elements in the same ________ are more similar in their chemical properties.

a)

group

b)

period

c)

club

d)

table

35.
The periodic table has __ periods.
a)
18
b)
8
c)
2
d)
7
36.
The periodic table has __ groups.
a)
8
b)
7
c)
18
d)
2
37.

Which elements are shiny/metallic, good conductors of heat and electricity, and malleable and ductile?

a)

Metals

b)

Nonmetals

c)

Metalloids

38.

Which elements have properties of both metals and nonmetals?

a)

Metals

b)

Nonmetals

c)

Metalloids

39.

Which elements are dull, brittle, and are poor conductors of heat and electricity?

a)

Metals

b)

Nonmetals

c)

Metalloids

40.
Observation or Inference?
It is a hot summer day
a)
observation
b)
inference
41.
Observation or Inference?
There is a red car at the bottom of a pool
a)
observation
b)
inference
42.
Paper burning and metal rusting are examples of a
a)
physical property
b)
chemical property
c)
physical change
d)
chemical change
43.
Properties that can be measured or observed without matter changing to an entirely different substance.
a)
Chemical Properties of Matter
b)
Physical Properties of Matter
c)
Physical Change
d)
Chemical Change
44.
Properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter.
a)
Evaporation
b)
Density
c)
Physical Properties Of Matter
d)
Chemical Properties of Matter
45.
Which property is an example of a chemical property?
a)
The ability to burn
b)
The ability to dissolve
c)
The ability to evaporate
d)
The ability to melt
46.
Density, melting point, boiling point:These may all be classified as
a)
chemical properties
b)
physcial properties
47.

Which is an example of a chemical change?

a)

Ice cream melting

b)

Painting a canvas

c)

Baking a cake

d)

Playing with Play-doh

48.

Which is an example of a physical change?

a)

A campfire

b)

Water boiling

c)

A gate rusting

d)

Statue of Liberty tarnishing

49.

Juan observes these properties of an unknown substance. The substance is white, has a crystaline structure, is soluble (dissolves) in water and burns when a flame is applied. What is a chemical property of the substance?

a)

color

b)

crystaline structure

c)

solubility

d)

flammability

50.
This is an example of a
a)
physical change
b)
chemical change
51.
Name the separation method that causes wet clothes on a clothes line to dry
a)
Chromatography
b)
Filtration
c)
Distillation
d)
Evaporation
52.

Which separation technique is shown below

a)

using a magnet

b)

separating funnel

c)

Centrifuging

d)

Chromatography

53.

Which separation technique is shown below

a)

filtration

b)

crystallization

c)

sublimation

d)

evaporation

54.
No matter what you do, sand will not dissolve in water, sand is _________ ?
a)
dissolved
b)
soluble
c)
insoluble
d)
aqueous
55.
An example of a mixture is 
a)
Water and oil
b)
Cereal and Milk 
c)
Sand and water 
d)
All of the above
56.

Name the separation technique

a)

Distillation

b)

Crystallisation

c)

Magnetic Separation

d)

Condensation

57.

In a salt water solution ...

a)

Salt is the solute and water is the solvent

b)

Salt is the solvent and water is the solute

58.

In order to speed up the rate of dissolving, you could.....

a)

Crush the solute

b)

Heat up the solvent

c)

Stir/Shake

d)

All of the above

59.

When is manual separation applicable?

a)

When the particles of the mixture are large enough to be seen clearly.

b)

When the solutes in the mixture are totally dissolved by the solvent.

c)

Only colloidal mixtures can be separated manually.

d)

When the mixture is exposed to heat.

60.

Dyes in water soluble markers may be separated by means of

a)

Simple distillation

b)

Crystallisation

c)

Chromatography

d)

Filtration

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