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1st Semester Review

Total questions: 100

Worksheet time: 2hrs 26mins

Name
Class
Date
1.
Is frying an egg a physical or chemical change?
a)
chemical
b)
physical
2.

Which of the following is true?

a)

A physical property can only be seen.

b)

A physical property describes how matter can change when exposed to air.

c)

A physical property is something that can be observed about the substance by itself.

d)

A physical property can only be observed when two types of matter interact.

3.

A chemical property describes how matter __________.

a)

smells

b)

reacts with another type of matter

c)

looks under a microscope

d)

dissolves when made into a solution

4.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
5.
Is melting ice a chemical or physical change?
a)
chemical
b)
physical
6.

When you increase the energy by heating a liquid what happens to the motion of the molecules

a)

They slow down

b)

They speed up

c)

Heat doesnt change the motion of the molecules

7.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

8.

Which is an example of a chemical change?

a)

baking a cake

b)

ripping paper

c)

stretching a rubber band

d)

chopping wood

9.
The _____is the part that gets dissolved. 
a)
solute 
b)
solvent 
c)
solution 
d)
Sacajawea 
10.
A solution is a kind of ________. 
a)
mixture 
b)
compound 
c)
element 
d)
stuff 
11.
The universal solvent is ______. 
a)
sodium 
b)
acid 
c)
water 
d)
wind 
12.
This is the part of the solution that does the dissolving. 
a)
solute
b)
solvent 
c)
salt water 
d)
First Continental Congress 
13.

Combination of two or more different kinds of substances that keep their own physical properties and can be easily separated.

a)

Solution

b)

Mixture

c)

Solubility

d)

Miscibility

14.

A solution that contains the maximum amount of solute at a given temperature

a)

Saturated

b)

Unsaturated

c)

Supersaturated

15.

In a chemical reaction, the _________ (left side of the equation) are the substances you START with.

a)

product

b)

reactant

16.

In a chemical reaction, the _________ (right side of the equation) are the substances that are FORMED.

a)

product

b)

reactant

17.

A coefficient tells us how many ____________ are present.

a)

molecules

b)

atoms

c)

sentences

18.

When two substance react, the total number of atoms on the product side is always...

a)

the same as the reactant side

b)

less than the reactant side

c)

greater than the reactant side

19.

The ___________ in a chemical equation shows how many atoms of a specific element are present in a compound.

a)

subscript

b)

coefficient

c)

molecules

20.

The Law of Conservation of Matter states that...

a)

matter cannot be created or destroyed

b)

matter cannot be created

c)

matter cannot be destroyed

21.

Na + Cl → NaCl What is the product?

a)

Na + Cl

b)

Cl

c)

NaCl

22.

Na + Cl → NaCl What is the reactant?

a)

Na + Cl

b)

NaCl

23.

An ___________ reaction absorbs more energy from its surroundings than it releases.

a)

endothermic

b)

exothermic

24.

An ____________ reaction releases more energy than is needed to get the reaction started.

a)

exothermic

b)

endothermic

25.

Represented by a chemical symbol (Ex: Na, C, H, O)

a)

element

b)

compound

c)

mixture

26.

Represented by a chemical formula (Ex: NaCHO)

a)

element

b)

compound

c)

mixture

27.

In sweet tea, what are the SOLUTES?

a)

water and sugar

b)

water only

c)

sugar and tea

d)

tea and water

28.

In sweet tea, what is the SOLVENT?

a)

water

b)

tea

c)

sugar

d)

tea and sugar

29.

What is the picture showing?

a)

element

b)

compound

c)

mixture

30.

What is the picture showing?

a)

element

b)

compound

c)

mixture

31.

What is the picture showing?

a)

element

b)

compound

c)

mixture

32.
The periodic table contains
a)
Periodic Table
b)
Mixtures
c)
Solids, Liquids, and gases
d)
Unimportant stuff
33.
Neutrons have a mass of ____
a)
2 amu
b)
-2 amu
c)
-1 amu
d)
1 amu
34.
In an element's symbol, the first letter is ALWAYS ____
a)
lowercase
b)
capitalized
c)
either
d)
depends on the element
35.
Protons have a mass of _______
a)
1 amu
b)
2 amus
c)
-1 amu
d)
-2 amu
36.
The atomic number tells us the number of protons and _____ in the atom
a)
protons
b)
neutrons
c)
shells
d)
electrons
37.
In an element's symbol, the second letter is ALWAYS ____
a)
either case
b)
average
c)
upper case
d)
lowercase
38.
The atomic mass is the mass of the ____ and _____
a)
protons and electrons
b)
1 amu
c)
electrons and neutrinos
d)
protons; neutrons
39.
Every element has a unique ___ that tells how many protons it has
a)
name
b)
atomic number
c)
shell
d)
language
40.
The number at the top of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
Chemical Symbol
d)
Element Name
41.

What part of the atom is the arrow pointing to?

a)

Proton

b)

Neutron

c)

Electron

42.

What part of the atom is the arrow pointing to?

a)

Proton

b)

Neutron

c)

Electron

43.

What part of the atom is the arrow pointing to?

a)

Proton

b)

Neutron

c)

Electron

44.

What is the atomic number of this element?

a)

O

b)

8

c)

16

45.

How many protons does this element have?

a)

16

b)

8

c)

0

46.

What is the atomic mass of this element?

a)

13

b)

26.982

c)

Al

47.

Before starting an investigation or lab procedure, you should

a)

try an experiment on your own

b)

open all containers and packages

c)

read all directions and make sure you understand them

d)

handle all the equipment to become familiar with it

48.

When pouring liquids between containers, you should hold the containers over

a)

the floor or a waste basket

b)

a fire blanket or oven mitt

c)

an eyewash station or a water fountain

d)

a sink or your work area

49.

If you get hurt or injured in any way, you should

a)

tell your teacher immediately

b)

find bandages or a first aid kit

c)

go to the principal's office

d)

get help after you finish the lab

50.

If your glassware is chipped or broken, you should

a)

use it for only solid materials

b)

give it to your teacher

c)

put it back in the materials area

d)

increase the damage so that it is obvious

51.

If you have unused liquids after finishing your procedure, you should

a)

mix them together in a bucket

b)

put them back into their original containers

c)

put them away where your teacher tells you to put them

52.

If electrical equipment has a cord or plug that appears damaged, you should

a)

unplug the equipment by pulling on the cord

b)

let the cord hang over the side of a counter or table

c)

tell your teacher about the problem immediately

d)

wrap tape around the cord to repair it

53.

If you need to determine the odor of a chemical or a solution, you should

a)

use your hand to bring fumes from the container to your nose

b)

bring the container under your nose and inhale deeply

c)

tell your teacher immediatly

54.

When working with materials that might fly into the air and get into your eyes or someone else's eyes, you should wear

a)

goggles

b)

an apron

c)

gloves

d)

a hat

55.

When working with a flame or heat source, you should

a)

tie back long hair that hangs in front of your eyes

b)

heat substances or objects inside a closed container

c)

touch an object with your bare hand and see how hot it is

d)

throw hot objects into the trash when you are done with them

56.

Goofing around in the lab is acceptable

a)

True

b)

False

57.

When heating a test tube, it is important to point the test tube

a)

towards your partner

b)

towards yourself

c)

away from you and others

d)

downward

58.

How should long hair be worn in the lab?

a)

curly and down

b)

tucked under a lab coat

c)

tied back with a rubber band

d)

hidden with a hat

59.

What type of shoes should you wear in a lab?

a)

flip flops

b)

purple pumps

c)

closed toed shoes

d)

none, go barefoot

60.

If you do not understand a step in the lab procedure, what should you do?

a)

walk across the room and ask another lab group

b)

try different methods until you get it right

c)

ask the teacher

61.

A statement that answer the question.

a)

claim

b)

evidence

c)

reasoning

62.

The scientific data and details that support your claim

a)

claim

b)

evidence

c)

reasoning

63.

Explains 'how' or 'why' the evidence supports the claim.

a)

claim

b)

evidence

c)

reasoning

64.

Claim:

a)

Bouncy balls bounce to different heights on different surfaces

b)

The ball bounced to 70 cm on the floor, 40 cm on the rug, and 10 cm on the dirt

c)

Different surfaces absorb different amounts of energy which causes the ball to lose different amounts of energy for bouncing.

65.

Evidence:

a)

Bouncy balls bounce to different heights on different surfaces

b)

The ball bounced to 70 cm on the floor, 40 cm on the rug, and 10 cm on the dirt

c)

Different surfaces absorb different amounts of energy which causes the ball to lose different amounts of energy for bouncing.

66.

Reasoning:

a)

Bouncy balls bounce to different heights on different surfaces

b)

The ball bounced to 70 cm on the floor, 40 cm on the rug, and 10 cm on the dirt

c)

Different surfaces absorb different amounts of energy which causes the ball to lose different amounts of energy for bouncing.

67.

Claim:

a)

Objects with a density greater than water will sink, while those with a lower density will float.

b)

The coin sinks to the bottom of the container, while the piece of wood and the bottle cap float on the surface.

c)

Density is the amount of mass per unit volume. Objects denser than water have more mass packed into a given volume and thus sink, while less dense objects displace enough water to stay afloat.

68.

Evidence:

a)

Objects with a density greater than water will sink, while those with a lower density will float.

b)

The coin sinks to the bottom of the container, while the piece of wood and the bottle cap float on the surface.

c)

Density is the amount of mass per unit volume. Objects denser than water have more mass packed into a given volume and thus sink, while less dense objects displace enough water to stay afloat.

69.

Reasoning:

a)

Objects with a density greater than water will sink, while those with a lower density will float.

b)

The coin sinks to the bottom of the container, while the piece of wood and the bottle cap float on the surface.

c)

Density is the amount of mass per unit volume. Objects denser than water have more mass packed into a given volume and thus sink, while less dense objects displace enough water to stay afloat.

70.

The basic metric unit for mass is the ...

a)

gram (g)

b)

meter (m)

c)

liter (L)

d)

Celcius (°C)

71.
The basic metric unit for temperature is .......
a)
gram (g)
b)
meter (m)
c)
liter (L)
d)
Celcius (°C) 
72.
The basic metric unit for volume is the .....
a)
gram (g)
b)
meter (m)
c)
liter (L)
d)
Celcius (°C) 
73.
The basic metric unit for distance is the ......
a)
gram (g)
b)
meter (m)
c)
liter (L)
d)
Celcius (°C) 
74.
To go from kilograms to grams, move the decimal point to the .....
a)
left
b)
right
75.
To go from milliliters to liters, move the decimal point to the ....
a)
left
b)
right
76.
Which one is the QUALITATIVE data?
a)
Snake's length: 1.8 meters.
b)
The snake is 180 centimeters long.
c)
The snake's length is above average.
77.
Which is the QUANTITATIVE data?
a)
He lives farther away than you.
b)
His house is red.
c)
He lives about 5 miles away.
78.
Factors in an experiment that stay the same.
a)
Constant
b)
Variable
c)
Hypothesis
79.
The trials in an experiment that show you what is "normal".
a)
Constant
b)
Variable
c)
Control
80.

The vertical axis of a line graph is called the __________.

a)

slope

b)

line of best fit

c)

x-axis

d)

y-axis

81.

The horizontal axis of a line graph is called the __________.

a)

slope

b)

line of best fit

c)

x-axis

d)

y-axis

82.

What is an independent variable?

a)

the variable that changes because another variable changes

b)

independent variables are only found on pie charts.

c)

a variable most often found on the y-axis

d)

the variable the experimenter changes or manipulates.

83.

What is a dependent variable?

a)

the variable the experimenter changes or manipulates.

b)

the variable that changes because another variable changes

c)

dependent variables are only found on pie charts

d)

a variable most often found on the x-axis

84.

Which type of graph best represents data that shows a change over a period of time?

a)

line

b)

bar

c)

table

d)

circle

85.

You have been asked to make a graph which represents everyone's favorite video game system in your class. Which type of graph would work best?

a)

line

b)

bar

c)

circle

d)

table

86.

What type of graph would you make to show how many of your classmates were born in each month of the year?

a)

line

b)

bar

c)

circle

d)

scatter plot

87.
How many more people have purple for a favorite color than red?
a)
3
b)
5
c)
7
d)
9
88.

What reaction has the following general formula:

A + CD --> C + AD

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

89.

What reaction has the following general formula:

AB --> A + B

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

90.

What reaction has the following general formula:

A + B --> AB

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

91.

What type of reaction is the following:
BaCl2+2KI −> 2KCl + BaI2BaCl_2+2KI\ ->\ 2KCl\ +\ BaI_2  

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

92.

What type of reaction is the following:
2KI −> 2K + I22KI\ ->\ 2K\ +\ I_2  

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

93.

What type of reaction is the following:
2NaHCO3−> Na2CO3+CO2+H2O2NaHCO_3->\ Na_2CO_3+CO_2+H_2O  

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

94.

What type of reaction is the following:
Zn + 2HCl −> ZnCl2+H2Zn\ +\ 2HCl\ ->\ ZnCl_2+H_2

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

95.

What type of reaction involves one element replacing another element in a compound?

a)

Single Displacement Reaction

b)

Double Displacement Reaction

c)

Synthesis Reaction

d)

Decomposition Reaction

96.

What type of reaction involves ions from 2 compounds exchanging places to form 2 completely new compounds?

a)

Single Displacement Reaction

b)

Double Displacement Reaction

c)

Synthesis Reaction

d)

Decomposition Reaction

97.

What are the reactants in the chemical equation pictured?

a)

CH4 and CO2

b)

CH4 and O2

c)

CO2 and H2O

d)

O2 and H2O

98.

What are the products of the chemical reaction pictured?

a)

CH4 and CO2

b)

CH4 and O2

c)

CO2 and H2O

d)

O2 and H2O

99.

What type of chemical reaction is this one?

CUO + CO2 --> CuCO3

a)

Decomposition

b)

Combustion

c)

Synthesis

d)

Single Replacement

100.

What type of chemical reaction is this one?

Ca + MgCl2 --> CaCl2 + Mg

a)

Decomposition

b)

Combustion

c)

Synthesis

d)

Single Replacement

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