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9 week practice exam

Total questions: 50

Worksheet time: 31mins

Name
Class
Date
1.
8 N to the left , and 4 N to the right. Find the net force. Is this balanced?
a)
12 N Right  No
b)
4 N Left  No
c)
12 N Right  Yes
d)
4 N Left  Yes
2.
If there are two forces going in the same direction how would you find the net force?
a)
Subtract
b)
Add
c)
Neither
d)
Multiply
3.
Force pair that has a net force of zero.
a)
Balanced force
b)
Unbalanced force
4.
Which one is balanced?
a)
top
b)
bottom
c)
both
d)
neither
5.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
6.
When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?
a)
The cannon moving forward
b)
The cannonball moving forward
c)
The cannon moving backward
d)
The cannonball moving backward
7.
According to Newton's second law, if you increase the force applied to an object :
a)
it accelerates more
b)
it doesn't move
c)
you get more inertia
d)
it decelerates
8.
Matt measured a small rubber ball and made 3 other balls of the same diameter from lead, foam, and wood. Which has the greatest inertia?
a)
rubber ball
b)
lead ball
c)
foam ball
d)
wood ball
9.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
accelerate.
10.
What law?
a)
1st
b)
2nd
c)
3rd
11.
This person bought coffee and put it on the seat next to them. If they stopped quickly and the coffee spilled which law would that represent?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
12.
A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
13.
Wheels on a skateboard most likely experiences-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
14.

What Is Matter?

a)

Anything That has mass and takes up space.

b)

Anything that you can see or taste.

c)

What you can touch.

d)

you and go throught this.

15.
Gas particles have the ________ kinetic energy because they move the fastest.
a)
least
b)
most
16.
This picture represents: 
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
17.
A substance in which all the atoms are the same
a)
colloid
b)
homogeneous mixture
c)
solution
d)
element
18.
Which of the following is an element?
a)
Sugar
b)
Salt
c)
Water
d)
Oxygen
19.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
20.
A combination that can be separated by physical processes is a .....
a)
Pure Substance
b)
Glucose
c)
Element
d)
Mixture
21.
If you change a substance into a new substance...
a)
Partial Change
b)
Physical Change
c)
Chemical Change
d)
Freezing
22.
Which is NOT a chemical change?
a)
Leaves changing colors in the fall
b)
Iron rusting
c)
Digesting Lunch
d)
Ice Melting
23.
A gold bar is an example of a.....
a)
pure element
b)
pure compound
c)
heterogeneous mixture
d)
homogeneous mixture
24.
NaCl
a)
Element
b)
Compound
c)
Homogeneous Mixture
d)
Heterogeneous Mixture
25.

A ______________ is made up of different kinds of atoms chemically combined.

a)

element

b)

compound

c)

mixture

d)

molecule

26.
Jorge prepared a drink and salad for dinner. The chart lists the ingredients for both.
Using the information in the chart, which statement is the BEST description of the drink and salad?
a)
The salad and fruit drink are both mixtures.
b)
The salad and the fruit drink are both solutions.
c)
The fruit drink is a mixture because the ingredients can't be separated.
d)
The salad is a solution because the ingredients can't be separated.
27.

Blood is a fluid found in the bodies of humans and other animals. It can be physically separated into plasma, red blood cells and white blood cells. Blood is a ___________________

a)

pure substance

b)

mixture

28.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-5
d)
1-20
29.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
30.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
31.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
32.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
33.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
34.

Which of the following is the strongest acid?

a)

1

b)

5

c)

3

d)

8

35.
What might happen if you mixed a strong acid with an equally strong base?
a)
You would see an explosive chemical reaction.
b)
The acid would destroy the base.
c)
The base would destroy the acid.
d)
You'd wind up with a pH-neutral substance.
36.

Cereal

a)

Homogeneous Mixture

b)

Heterogeneous Mixture

37.
The picture shown here is what type of mixture?
a)
homogeneous
b)
hetergeneous
c)
pure substance
d)
element
38.

Pure Substance or Mixture?

Dr. Pepper

a)

pure substance

b)

mixture

39.

The vertical (up and down) columns in the Periodic Table are called

a)

groups

b)

towers

c)

periods

d)

atomic numbers

40.
The Modern Periodic Table of Elements is arranged by
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
41.
Sodium (Na) is found in period 
a)
3
b)
2
c)
4
d)
1
42.
Sodium (Na) is found in group 
a)
1
b)
2
c)
3
d)
4
43.
What does the 6 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
44.
What does 12.011 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
45.

The horizontal (side to side) rows in the Periodic Table are called

a)

groups

b)

families

c)

periods

d)

atomic numbers

46.

Atoms of elements that are in the same group have the same number of

a)

protons.

b)

neutrons.

c)

valence electrons.

d)

protons and neutrons.

47.

In Mendeleev's periodic table, elements in each column had similar

a)

atomic masses.

b)

properties.

c)

atomic numbers.

d)

symbols.

48.

Elements in an elemental family have similar

a)

atomic symbols.

b)

atomic sizes.

c)

atomic weights.

d)

chemical properties.

49.

Which element on the periodic table has 45 protons?

a)

Scandium

b)

Rhodium

c)

Rhenium

d)

Cesium

50.

Which element is in Group 18 and period 4?

a)

Krypton

b)

Argon

c)

Xenon

d)

Bromine

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