AnswersMS-Physical ScienceCumulative Exam

Cumulative Exam Answers

25 verified answers
1
Free Preview

best

i
increasing the inertia of the car
d
decreasing the reaction force
i
increasing the action force
d
decreasing the mass of the car
2
Free Preview

Which type of reaction is Mg + S → MgS?

p
polymerization
s
synthesis
r
replacement
d
decomposition
3

What should be the ending of the second element in a covalent compound?

-ide
Option
-ium
Option
the prefix
Option
the subscript
Option
4

Which scientist believed that the probable, not exact, location of the electrons of an atom can be determined by using mathematics?

R
Rutherford
B
Bohr
D
Dalton
S
Schrödinger
5

What is a limitation of using a chemical formula, such as C6H12O6, to represent a compound?

T
The chemical formula does not show the types of elements that make up the compound.
T
The chemical formula does not show how the atoms are connected to one another.
T
The chemical formula does not show the number of atoms of each element in a molecule.
T
The chemical formula does not show the chemical symbols of the elements in the compound.
6

How many atoms of each element are in the chemical formula NH4NO3?

A
1 nitrogen, 1 hydrogen, and 3 oxygen
B
1 nitrogen, 4 hydrogen, and 3 oxygen
C
2 nitrogen, 4 hydrogen, and 3 oxygen
D
5 nitrogen, 1 hydrogen, and 1 oxygen
7

What does the chemical formula C3H6O2 tell about a molecule of the compound it represents?

A
It is made up of 3 atoms of 11 different elements.
B
It is made up of 11 atoms joined in a straight line.
C
It is made up of 11 total atoms of 3 different elements.
D
It is made up of 1 atom composed of 3 different elements.
8

Jenny is studying a compound that has two oxygen atoms and one nitrogen atom. Which statement describes the subscripts she will use to write the chemical formula?

She will use one 2 as a subscript.
Option
She will use one 2 and one 1 as subscripts.
Option
She will use one 3 as a subscript.
Option
She will use two 2s and one 1 as subscripts.
Option
9

greatest

b
blood, pH = 7.2
l
lemon juice, pH = 2
s
soda, pH = 3.5
b
bleach, pH = 13.5
10

What is determined by calculating the slope of the position vs time graph?

p
position
v
velocity
d
distance
d
displacement
11

Marco wants to investigate the chemical properties of sodium bicarbonate, or baking soda. He plans to carry out the tests below.Test 1: Mix a teaspoon of sodium bicarbonate into a cup of warm water to see if it dissolves.Test 2: Mix a teaspoon of sodium bicarbonate into a cup of vinegar to see if it fizzes.Test 3: Heat a teaspoon of sodium bicarbonate in the oven to see if its melting point is less than 400 degrees Fahrenheit.

O
Only Test 3 will indicate a chemical property of sodium bicarbonate. Tests 1 and 2 will show a physical property of the substance.
O
Only tests 1 and 2 will indicate chemical properties of sodium bicarbonate. Test 3 will show a physical property of the substance.
O
Only Test 2 will indicate a chemical property of sodium bicarbonate. Tests 1 and 3 will show a physical property of the substance.
O
Only tests 1 and 3 will indicate chemical properties of sodium bicarbonate. Test 2 will show a physical property of the substance.
12

Which state(s) of matter have no definite shape or volume?

l
liquids and solids
l
liquids and gasses
g
gasses
s
solids
13

A can of soda contains many ingredients, including vanilla, caffeine, sugar, and water. Which ingredient is the solvent?

c
caffeine
s
sugar
v
vanilla
w
water
14

Donald is writing a chemical name from a chemical formula. He has just identified that there are five atoms of oxygen bonded with two atoms of phosphorus.

O5P2
Option
O2P5
Option
P2O5
Option
P5O2
Option
15

best

T
The solution has more hydrogen ions than hydroxide ions.
T
The solution has fewer hydrogen ions than hand soap.
T
The solution has the same number of hydrogen ions as apple juice.
T
The solution has the same number of hydrogen ions and hydroxide ions.
16

best

H
His speed was 1 m/s, and his velocity was 0.
H
His speed was 2 m/s, and his velocity was 0.
H
His speed was 1 m/s, and his velocity was 1 m/s north.
H
His speed was 2 m/s, and his velocity was 2 m/s south.
17

best

T
The atoms in hydrogen peroxide are breaking apart and forming new types of molecules.
T
The atoms in hydrogen peroxide are breaking apart and recombining into the original molecules.
T
The molecules of hydrogen peroxide remain intact as new types of molecules form and move out of the liquid.
T
The molecules of hydrogen peroxide remain intact but move more quickly to allow evaporation.
18

best

a
a colloid
a
a suspension
a
a solution
a
an alloy
19

Rutherford used positively charged particles to investigate the structure of the atom. The results surprised him, and he developed the atomic model shown below.

Question illustration
A
A few positive particles bounced back because they bounced off of the net formed by the ovals.
A
A few positive particles bounced back because they were pushed away from the positive center.
M
Most positive particles passed through because of the empty space between the outer edge and the center.
M
Most positive particles passed through because they were attracted by the small particles moving around the center.
20

Suna passes an electric current through a sample of clear, colorless, and odorless liquid. As the experiment continues, bubbles form, and the volume of liquid decreases. Suna collects samples of two colorless, odorless gases that bubble out of the liquid. One of the gases burns. Neither the original liquid nor the other gas burns.Which is the best explanation of her results?

A
The electric current changed some of the sample to gas even though the sample was not breaking down. Therefore, the original liquid is a compound.
B
The electric current released a gas that was odorless and colorless, like the original sample. Therefore, the original liquid is an element.
C
The sample was broken down by the electric current and formed a new substance that could burn. Therefore, the original liquid is a compound.
D
The sample lost some of its volume, but the gas still had the same chemical makeup as the original sample. Therefore, the original liquid is an element.

Did you find these answers helpful?

More from this Course

Quiz
10 verified answers

Using Sound

Quiz
10 verified answers

Using Sound

Quiz
10 verified answers

Introduction to Machines