Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

PS Unit 7 LIFT 2023

Total questions: 50

Worksheet time: 57mins

Name
Class
Date
1.

What does the subscript in a chemical formula tell you? (a)  

Choose from the below words
How many molecules are present
How many atoms are present
How many elements are present
How many neutrons are present
2.

How many elements are in this chemical formula?

H2SO4H_2SO_4  

a)

1

b)

2

c)

3

d)

4

3.

How many atoms of Carbon are in this formula? C6 H12O6C_{6\ }H_{12}O_6  

a)

6

b)

1

c)

12

4.

What elements are represented in this chemical formula? Fe2O3Fe_2O_3  

a)

Iron, Oxygen

b)

Francium, Europium, Oxygen

c)

Ferrium, Oxygen

d)

Berylium, Oxygen

5.

What is the total number of atoms in this formula? H2O2H_2O_2  

a)

2

b)

4

c)

3

6.

Is this an element or a compound? CaSO4CaSO_4  

a)

Element

b)

Compound

7.

Which chemical formula correctly displays 1 atom of nickel and 2 atoms of Fluorine?

a)

niF2

b)

NIF2

c)

Ni1F2

d)

NiF2

8.

What is the total number of atoms in this chemical formula? C8H3NaBr12C_8H_3NaBr_{12}  

a)

18

b)

12

c)

25

d)

24

9.

Which element has the greatest number of atoms? AgNO3AgNO_3  

a)

Silver

b)

Gold

c)

Nitrogen

d)

Oxygen

10.

What does the Law of Conservation of Mass say? It says,


"During a chemical reaction, mass is neither _______ or destroyed."

a)

burned

b)

created

c)

melted

11.

The substances that go into a reaction are called the _______.

a)

products

b)

reactants

12.
Which problem is balanced?
(Check ALL answers)
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
13.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
14.

Balance this equation

_Al +_HCl --> _H2 +_AlCl3

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

15.
Which of the following equations are correctly balanced?
a)
12CO2 +H2O --> C6H12O6 + O2
b)
CO2 + 9H2O --> C6H12O6 + O2
c)
CO2 + H2O --> 3C6H12O6 + O2
d)
6CO2 + 6H2O --> C6H12O6 + 6O2
16.

Balance the following equation:

___ H2+ ___ O2→___ H2O

a)

1, 1, 3

b)

2, 2, 2

c)

1, 2, 1

d)

2,1, 2

17.

Balance the following equation:

___ Mg+ ___ O2→___ MgO

a)

1, 1, 3

b)

2, 1, 2

c)

1, 2, 1

d)

2, 2, 2

18.

Balance the following equation:

___ SeCl6+ ___ O2→___ SeO2+____Cl2

a)

1, 1, 1, 3

b)

2, 1, 2, 1

c)

1, 2, 1, 2

d)

2, 2, 2, 4

19.

When in a science lab you should never...

a)

Eat or drink

b)

Take measurements

c)

Wear goggles

d)

Heat up beakers

20.

If you aren't sure about anything included in the investigation you are performing, you should always ask __________.

a)

Your friend

b)

A person in the next class

c)

Your teacher

d)

Google

21.

Which items of clothing are not safe in a science lab?

a)

Open toe shoes

b)

Closed toe shoes

c)

Long hair not tied up

d)

Goggles

e)

Lab apron

22.

If there is broken glass, you should...

a)

Sweep it up using paper towels

b)

Sweep it up using a broom

c)

Tell your teacher who will dispose of it in the glass disposal box

d)

Leave it on the ground

23.

If a chemical splashes into your eye, what safety tool will be the most effective to prevent damage to your eye?

a)

The sink

b)

Paper towels

c)

Eye wash

d)

Safety Shower

e)

Fire blanket

24.

When trying to observe a smell in a lab investigation you should...

a)

waft the air toward your nose

b)

place your nose directly above the beaker or other container

c)

Inhale as much of the air above the beaker as possible

25.

Which of the following is NOT an acceptable method of observation in a science lab?

a)

Seeing

b)

Smelling

c)

Tasting

d)

Listening

26.
The variable the is changed on purpose is..
a)
Constant
b)
Control
c)
Independent Variable
d)
Dependent Variable
27.

What is the DEPENDENT variable (effect) in this experiment?

"Does eating breakfast improve test score?"

a)

eating breakfast or not

b)

the grade you got on the test

c)

what time you get up in the morning

d)

what you eat for breakfast

28.
What is the INDEPENDENT variable (cause)in this experiment?
"Which type of metal, copper or aluminum, conducts heat faster?" 
a)
size of metal
b)
types of metal
c)
time it takes to heat up
d)
shape of the metal
29.
What is the INDEPENDENT variable (cause) in this experiment?
"Will fish school more if a predator is present?" 
a)
whether there is a predator or not
b)
number of fish school together
c)
type of predator
d)
type of fish
30.
What is the DEPENDENT variable (effect) in this experiment?
"Do tall people jump further than short people?"
a)
height of the person
b)
weight of the person
c)
how fast the person runs
d)
how far the person jumps
31.

A study was done to determine to figure out if HOW LONG YOU SLEEP affects your TEST SCORE. The INDEPENDENT variable is...

a)

test scores

b)

place you sleep

c)

hours of sleep

32.
What is the name of this graph?
a)
line plot
b)
line graph
c)
bar graph
d)
frequency table
33.
The X axis is _______?
a)
vertical
b)
diagonal
c)
criss-cross
d)
horizontal
34.
The Y axis is _______?
a)
Vertical
b)
Horizontal
c)
criss-cross
d)
diagonal
35.

Summarizes information being represented on ANY graph

a)

Title

b)

x axis title

c)

y axis title

d)

z axis title

36.

Bar graphs represent what kind of data

a)

comparison of amounts

b)

shows change over time

c)

shows parts of a whole

d)

spread of the data

37.

Line graphs represent what kind of data

a)

comparison of amounts

b)

shows change over time

c)

shows parts of a whole

d)

spread of the data

38.

Independent variable is the one controlled by the experimenter ex: time, date, depth, temperature.... and is placed on the _____ axis of a graph

a)

z

b)

y

c)

x

d)

not on a graph

39.

Dependent variable is the data resulting FROM the change made by the experimenter and is placed on the _____ axis

a)

z

b)

y

c)

x

d)

not on a graph

40.
T11 - What can you infer about the temperature for E.coli bacterial growth?
a)
E. coli does not grow well at low and high temperatures.
b)
E coli will continue to grow at very high temperatures.
c)
E.coli grows best at very low temperatures
d)
E.coli grows best at very high temperatures.
41.

What conclusions can you draw from this graph?

a)

The deer population went down over time.

b)

The deer population went up over time.

c)

The dear population went up quickly, then down, but then stayed the same.

d)

There are less dear because of hunters

42.

This is when heat is absorbed, it is an

a)

Exothermic reaction

b)

endothermic reaction

c)

both

d)

none

43.

When heat is released it is an

a)

exothermic reaction

b)

endothermic reaction

c)

both

d)

none

44.

Evidence of a chemical reaction is when 2 substances react, they

a)

stay the same

b)

form a new substance

c)

both

d)

none

45.

Fireworks are an example of

a)

exothermic

b)

endothermic

c)

both

d)

none

46.

The chemical bond between a non-metal and another non-metal will be a ________ bond.

a)

metal

b)

ionic

c)

covalent

d)

polar

47.

The chemical bond between a metal and a non-metal will be a _____ bond.

a)

metal

b)

ionic

c)

covalent

d)

polar

48.

Beryllium and sulfur will form a ______ bond

a)

ionic

b)

covalent

c)

metalloid

49.

Nitrogen and Oxygen will make a ____________ bond

a)

ionic

b)

covalent

c)

metallic

50.

MgO

a)

ionic

b)

covalent

c)

metallic

Similar Resources on Wayground

Seasons & Weather

50 questions

Seasons & Weather

quiz

Worksheet

•

7th - 8th Grade

STAAR Spiral Review 8.7ABC

46 questions

STAAR Spiral Review 8.7ABC

quiz

Worksheet

•

8th Grade

Earth, Moon, Sun Review

52 questions

Earth, Moon, Sun Review

quiz

Worksheet

•

6th - 9th Grade

EM Spectrum and Universe

50 questions

EM Spectrum and Universe

quiz

Worksheet

•

8th Grade

SSA Review 2

50 questions

SSA Review 2

quiz

Worksheet

•

6th - 8th Grade

Earth-Moon-Sun System

50 questions

Earth-Moon-Sun System

quiz

Worksheet

•

6th - 9th Grade

6th grade Unit 4 (PfISD)

45 questions

6th grade Unit 4 (PfISD)

quiz

Worksheet

•

6th - 8th Grade

Moon Phases and Tides

52 questions

Moon Phases and Tides

quiz

Worksheet

•

6th - 8th Grade