Quiz about Physical Science Mid Year Review 8th Grade

Question 1

positive charge, found in nucleus, mass = one

Accepted Answer

proton

Answer

neutron

Answer

electron

Answer

ion

Question 2

no charge, found in nucleus, mass = one

Accepted Answer

neutron

Answer

proton

Answer

electron

Answer

ion

Question 3

negative charge, found orbiting nucleus, mass is almost zero

Accepted Answer

electron

Answer

proton

Answer

neutron

Answer

ion

Question 4

the ability to be hammered into sheets

Accepted Answer

malleability

Answer

conductivitiy

Answer

ductility

Question 5

Smallest component of an element

Accepted Answer

atom

Answer

molecule

Question 6

A scientist spilled a few drops of dilute hydrochloric acid on a lab table.  For safety purposes, the scientist sprinkled some baking soda onto the spill.  Which observation would provide the best evidence that a chemical reaction occurred?

Accepted Answer

The baking soda and hydrochloric acid combined, and bubbles formed.

Answer

The baking soda absorbed the hydrochloric acid.

Answer

Some of the baking soda dissolved in the hydrochloric acid.

Answer

The hydrochloric acid evaporated, leaving only the baking soda.

Question 7

How many atoms of oxygen are in a molecule of glucose (C₆H₁₂O₆)?

Accepted Answer

6

Answer

12

Answer

18

Answer

24

Question 8

Which is an example of a physical property?

Accepted Answer

state of matter

Answer

ability to react with acid

Answer

flammability

Answer

ability to react with oxygen

Question 9

Which of the following is a physical property?

Accepted Answer

melting point

Answer

flammability

Answer

ability to rust

Question 10

Gold, which is in Group 11 on the periodic table, is an example of a(n) ____________

Accepted Answer

Transition Metal

Answer

Alkali Metal

Answer

Other Metal

Answer

Alkaline Earth Metal

Question 11

How many protons does an atom of mercury have?

Accepted Answer

80

Answer

200.6

Answer

120

Answer

0

Question 12

Which group of elements have both metal and non-metal characteristics?

Accepted Answer

metalloids

Answer

lanthanides

Answer

actinides

Answer

noble gases

Question 13

A row on the periodic table of elements is called a...

Accepted Answer

Period

Answer

Group

Answer

Family

Answer

Column

Question 14

The elements in this group only have 1 outer electron.

Accepted Answer

Group 1

Answer

Group 11

Answer

Group 3

Answer

Group 18

Question 15

The elements in this group have 5 outer electrons.

Accepted Answer

Group 15

Answer

Group 5

Answer

Group 1

Answer

Group 18

Question 16

Carbon has an atomic number of 6.  What can you conclude about carbon from this fact?

Accepted Answer

It has six protons

Answer

It has six neutrons

Answer

It has six electrons

Answer

It has six positrons

Question 17

Study of inanimate natural objects including chemistry, physics, and astronomy.

Accepted Answer

Physical Science

Answer

Chemistry

Answer

Control

Answer

Dependent Variable

Question 18

The scientific study of the structure, properties, and reactions of the chemical elements and the compounds they form.

Accepted Answer

Chemistry

Answer

Theory

Answer

Law

Answer

Control

Question 19

Educated guess based upon evidence and used as a starting point for investigation.

Accepted Answer

Hypothesis

Answer

Guess

Answer

Independent variable

Answer

I don't know

Question 20

Systematic observation, measurement, and experimentation to form, test, and modify a hypothesis.

Accepted Answer

Scientific Method

Answer

Law

Answer

Chemistry

Answer

Data

Question 21

The process by which hot and cold air are transferred in the atmosphere is

Accepted Answer

convection.

Answer

conduction.

Answer

insulation.

Answer

radiation.

Question 22

Microwave ovens heat food through the process of

Accepted Answer

radiation.

Answer

conduction.

Answer

convection

Answer

stratification

Question 23

Heat is transferred from the heating element to the pot to the boiling water. What is the MOST likely method of heat transfer?

Accepted Answer

conduction

Answer

circulation

Answer

convection

Answer

radiation

Question 24

The process of heat radiation is the ONLY method of heat transfer that can occur _____________

Accepted Answer

through space.

Answer

under water.

Answer

through the air.

Answer

through a solid.

Question 25

A change in _____ means that a chemical reaction has occurred.

Accepted Answer

the properties and identity of the reacting substances

Answer

the energy and mass

Answer

the kinds of atoms involved

Answer

the energy and kinds of atoms of the reacting substances

Question 26

Which is an example of a physical change?

Accepted Answer

Mixing blue and yellow paint to create green paint

Answer

Adding water and yeast to bread dough in order to make it raise.

Answer

Mixing two liquids together in a test tube and the tube becoming warm.

Answer

Mixing two liquids together in a test tube and the tube becoming warm.

Question 27

water freezing to form ice

melting a gold chain to create a gold ring

breaking a window into smaller pieces

Accepted Answer

physical change.

Answer

chemical change.

Answer

chemical decomposition.

Answer

increasing surface volume.

Question 28

Ben and Jerry were testing powders in science lab. First they put the powder in a zip lock bag. Next they added some water. The powder fizzed and bubbled; soon it disappeared. When the bubbling stopped the bag contained a clear liquid and a lot of gas.

What is the MOST OBVIOUS sign of a chemical change in this reaction.

Accepted Answer

A gas was produced.

Answer

The powder mixed with the water.

Answer

There was a change in temperature.

Answer

The powder dissolved in the water.

Question 29

What is the name of this method, shown in the image, used to separate certain mixtures, like sugar and water?

Accepted Answer

evaporation

Answer

floatation

Answer

magnetism

Answer

sifting

Question 30

How many electrons can the lowest energy level hold?

Accepted Answer

2

Answer

4

Answer

6

Answer

8

Question 31

An electron on an atom's OUTERMOST energy level is called a _____ electron.

Accepted Answer

valence

Answer

constant

Answer

stable

Answer

outer

Question 32

How many valence electrons does this atom have?

Accepted Answer

5

Answer

2

Answer

8

Answer

15

Question 33

How many valence electrons would an atom of lithium have?

(Lithium has 3 protons.)

Accepted Answer

1

Answer

2

Answer

3

Answer

5

Question 34

Which statement best describes evidence that a chemical reaction occurs as a cake bakes?

Accepted Answer

The cake rises as gas bubbles form in the baking cake.

Answer

The water in the cake batter evaporates.

Answer

The cake takes the shape of the container in which it is baked;

Answer

The water in the cake batter is used to keep the cake moist as it bakes.

Question 35

How many elements are in the chemical formula CH₃CO₂?

Accepted Answer

3

Answer

1

Answer

4

Answer

7

Question 36

All of the following are examples of elements except...

Accepted Answer

CO

Answer

Cu

Answer

Cl

Answer

He

Question 37

Which of the following is not true when referring to the Law of Conservation of Mass?

Accepted Answer

The coefficients in the reactants must be the same as the coefficients in the products.

Answer

The mass of the reactants must be the same as the products.

Answer

The elements in the reactants must be the same as the elements in the products.

Answer

The amount of atoms in the reactants must be the same as the amount of atoms in the products.

Question 38

How many total atoms are in this formula 2C₂H₄O?

Accepted Answer

14

Answer

8

Answer

9

Answer

13

Question 39

Winds are an example of _____________ currents?

Accepted Answer

Convection

Answer

Hot

Answer

Wind

Answer

Depth

Question 40

The kinetic energy of atoms or molecules

Accepted Answer

Thermal Energy

Answer

Kinetic Energy

Answer

Nuclear Energy

Answer

Chemical Energy

Question 41

A device that converts thermal to mechanical energy is a/an ________ __________

Accepted Answer

Heat Engine

Answer

Battery

Answer

Solar Panel

Answer

Thermostat

Question 42

The emission/transmission of energy in the form of waves/rays is Radiation.

Accepted Answer

True

Answer

False

Question 43

Energy is measured in ________.

Accepted Answer

Joules

Answer

Celsius

Answer

Kelvin

Answer

Cups

Question 44

___________ is the amount of matter in an object.

Accepted Answer

mass

Answer

weight

Answer

volume

Answer

force

Question 45

a measurement of the gravitational force acting on an object

Accepted Answer

weight

Answer

speed

Answer

velocity

Answer

inertia

Question 46

According to the Law of Conservation of Energy, energy cannot be _________ or ____________.

Accepted Answer

created, destroyed

Answer

destroyed, destroyed

Answer

created, saved

Answer

lost, found

Question 47

The roller coaster cart has the most gravitational potential energy at position-

Accepted Answer

W

Answer

X

Answer

Y

Answer

Z

Question 48

Where is the potential energy the greatest?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 49

What is energy?

Accepted Answer

The ability to do work

Answer

A force

Answer

Electricity

Answer

The ability to transform work

Question 50

Energy of motion is which type of energy?

Accepted Answer

Kinetic

Answer

Potential

Answer

Sound

Answer

Gravitational

Question 51

Where is the potential energy the least?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 52

If a Lion ate a gazelle what kind of energy is being transferred?

Accepted Answer

Chemical

Answer

Mechanical

Answer

Electrical

Answer

Thermal

Question 53

What kind of energy transformation takes place in this system?

Accepted Answer

chemical to electrical to light

Answer

electrical to chemical to light

Answer

electrical to light to chemical

Answer

light to chemical to electrical

Question 54

What two forms of energy are given off by a burning candle?

Accepted Answer

heat and light

Answer

mechanical and electrical

Answer

nuclear and light

Answer

potential and heat

Question 55

What is the energy transformation that occurs in an electric pencil sharpener?

Accepted Answer

electrical energy to mechanical energy

Answer

mechanical energy to electrical energy

Answer

radiant energy to sound energy

Answer

chemical energy to mechanical energy

Question 56

When a car burns gasoline it creates hot air to move the pistons in the engine, which causes the car to move. What energy transformation occur from the fuel to the movement of a car?

Accepted Answer

chemical energy to thermal energy to mechanical energy

Answer

thermal energy to mechanical energy

Answer

thermal energy to chemical energy to mechanical energy

Answer

chemical energy to electrical energy

Physical Science Mid Year Review 8th Grade

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