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Physical Science Final Exam

Total questions: 40

Worksheet time: 21mins

Name
Class
Date
1.

Using the graduated cylinder, pick the accurate AND precise measurement below.

a)

22.0 mL

b)

20.0 mL

c)

22 mL

d)

20 mL

2.

What is 78,900,000,000 written in scientific notation?

a)

A. 789x108789 x 10^8

b)

B. 7.89x10107.89 x 10^{10}

c)

C. 7.89 x 10^9

d)

D. 7.89x10117.89 x 10^{11}

3.

The speed of light is approximately 3 x 10^8 m/s. How would this be written in standard notation?

a)

300,000 m/s

b)

30,000,000 m/s

c)

3,000,000 m/s

d)

300,000,000 m/s

4.

The speed you read on a speedometer is ______.

a)

instantaneous speed

b)

average speed

c)

constant speed

d)

velocity

5.

A cross-country runner runs 10 km in 40 minutes. What is his average speed?

a)

30 km/min

b)

400 km/min

c)

4 km/min

d)

0.25 km/min

6.

According to Newton’s Laws, for any object, the greater the force that's applied to it, the greater its ______ will be.

a)

acceleration

b)

inertia

c)

gravity

d)

size

7.

What is the acceleration of the box in the diagram below?

a)

7,500 m/s2m/s^2

b)

300 m/s2m/s^2

c)

25 m/s^2

d)

12 m/s^2

8.

What is the weight of the box in the diagram?

a)

25 kg

b)

25 N

c)

245 N

d)

245 kg

9.

An object that has kinetic energy must be

a)

lifted above earth’s surface

b)

at rest

c)

in motion

d)

none of the above

10.

The mechanical energy of a coconut falling from a tree ____.

a)

doesn’t exist

b)

increases

c)

decreases

d)

remains constant

11.

When two or more substances are physically combined, the result is a(n) ____________.

a)

mixture

b)

element

c)

compound

d)

solution

12.

A type of matter formed by chemically joining two or more elements is known as a

a)

compound

b)

solution

c)

colloid

d)

suspension

13.

Which part of the periodic table indicates the number of energy levels in the electron cloud?

a)

Group

b)

Family

c)

Valence electrons

d)

Period

14.

What is an atom’s nucleus made of?

a)

protons and electrons

b)

protons only

c)

protons and neutrons

d)

neutrons only

15.

Atoms of the same element that have different numbers of neutrons are called

a)

molecules

b)

ions

c)

protons

d)

isotopes

16.

Which particles determine the atomic number of an element?

a)

protons only

b)

neutrons and protons

c)

neutrons only

d)

protons and electrons

17.

The chemical bond formed when two atoms share electrons is called a(n)

a)

Covalent bond

b)

Ionic bond

c)

Metallic bond

d)

Electron bond

18.

How does an atom of aluminum become an ion?

a)

It gains 3 electrons

b)

It gains 3 protons

c)

It loses 3 electrons

d)

It loses 3 neutrons

19.

Which of the following is a similarity between ionic and covalent bonds?

a)

Both include the gaining and losing of electrons

b)

Both include the sharing of electrons

c)

Both make the elements more stable

d)

Both are typically found as solids at room temperature.

20.

The Law of Conservation of Mass states

a)

Mass never stays constant

b)

Mass is always added during a chemical change

c)

Mass is always lost during a chemical change

d)

Mass is not lost or created during a chemical change

21.

A substance that is an ingredient in a chemical reaction is called a(n) ____________.

a)

C. Reactant

b)

A. Product

c)

B. Catalyst

d)

D. Solvent

22.

A solid produced from two liquids in a double displacement chemical reaction is called a ____________

a)

B. precipitate

b)

A. solution

c)

C. gas

d)

D. reactant

23.

26. 331 K to °C

a)
58°C
b)

68°C

c)

50°C

d)

60°C

24.

A person walks 3 miles north, turns, and walks 2 miles east. Calculate the person’s distance traveled and their displacement.

a)

Distance traveled: 5 miles; Displacement: √(3² + 2²) = √13 ≈ 3.6 miles

b)

Distance traveled: 6 miles; Displacement: 5 miles

c)

Distance traveled: 5 miles; Displacement: 2.5 miles

d)

Distance traveled: 3 miles; Displacement: 2 miles

25.

Rank the following objects from LEAST inertia to MOST inertia: the principal, pencil, science textbook.

(a)  

26.

A 2 N and an 8 N force pull on an object to the right and a 4 N force pulls to the left a 0.5 kg object. What is the acceleration on the object?

a)
12 m/s²
b)

5 N

c)

15 m/s²

d)

10 kg

27.

What is the net force acting on the bicycle?

a)

10 N

b)

0 N

c)

5 N

d)

20 N

28.

What is the momentum of a baseball with a mass of 2 kg being thrown at a velocity of 85 m/s towards the hitter?

a)

170 kg·m/s

b)

85 kg·m/s

c)

42.5 kg·m/s

d)

187 kg·m/s

29.

160 J of work was done to lift a crate with a force of 40 N. How far was the crate lifted?

a)
4 m
b)

7 m

c)

160 J

d)

40 N

30.

How much power is used if a force of 100 N is used to push a box a distance of 30 meters in 5 seconds?

a)
600 W
b)

700 W

c)

900 W

d)

500 W

31.

A piece of wood that measures 3 cm by 6 cm by 4 cm has a mass of 80 g. What is the density of the wood?

a)

≈ 1.11 g/cm³

b)

≈ 0.89 g/cm³

c)

≈ 3.33 g/cm³

d)

≈ 0.56 g/cm³

32.

A graduated cylinder has 33.5 mL of water. A piece of metal is added to the water and the new volume is now 46.2 mL. If the metal has a mass of 16.25 g, what is its density?

a)

1.28 g/mL

b)

0.78 g/mL

c)

2.10 g/mL

d)

1.65 g/mL

33.

Magnesium-20

a)

Isotope of Magnesium

b)

Alloy of Magnesium

c)

Compound of Magnesium

d)

Element with atomic number 12

34.

Draw the electron dot diagram for the bond between Aluminum and Chlorine. Then write the chemical formula for the compound.

a)

AlCl3

b)

Al2Cl3

c)

AlCl

d)

Al3Cl

35.

Name the following ionic compound: MgO.

a)

Magnesium oxide

b)

Magnesium monoxide

c)

Manganese oxide

d)

Magnesium dioxide

36.

Give the correct chemical formula for the following names. (1 pt each)
a. Iron (II) chloride

a)

FeCl2

b)

FeCl3

c)

Fe2Cl3

d)

Fe2Cl

37.

Name the following compound: P4O6

a)

Tetraphosphorus hexoxide

b)

Tetraphosphorus hexasulfide

c)

Tetraphosphorus trioxide

d)

Phosphorus pentoxide

38.

Give the correct chemical formula for the following names. (1 pt each) a. Tetracarbon decahydride

a)

C4H10

b)

C10H4

c)

C4H12

d)

C10H8

39.

Balance and classify the following chemical reactions. ____PBr3 → _____P4 + ___Br2

a)

4PBr3 → P4 + 6Br2

b)

2PBr3 → P2 + 3Br2

c)

3PBr3 → P3 + 2Br2

d)

PBr3 → P + 3Br2

40.

Balance and classify the following chemical reactions. _____CH4 + ____O2 → _____CO2 + ____H2O

a)

CH4 + 2O2 → CO2 + 2H2O

b)

CH4 + O2 → CO2 + H2O

c)

CH4 + 2O2 → CO2 + H2O

d)

CH4 + O2 → CO2 + 2H2O

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