Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Chemical Reactions Chapter 1 Test

Total questions: 43

Worksheet time: 41mins

Name
Class
Date
1.
The letters and numbers of the atoms that make up a substance is known as a _____________________.
a)
scientific number
b)
chemical formula
c)
periodic table
d)
chemical reaction
2.
Repeating atom groups can form separate units called _____________________.
a)
extended structures
b)
chemical formulas
c)
elements
d)
molecules
3.
A substance can be made up of one type of atom or a specific group of atoms that ____________ over and over.
a)
repeats
b)
combines
c)
arranges
d)
reacts
4.
Out of the following substances, circle the one that is NOT a molecule.
a)
NaCl (sodium chloride)
b)
H2O (water)
c)
Fe2 O3 (iron oxide)
d)
Au (gold)
5.
Which scientist arranged elements in an organized way that we now call the Periodic Table?
a)
John Dalton
b)
Albert Einstein
c)
Dmitri Mendeleev
d)
Thomas Edison
6.
This diagram shows the repeating groups of atoms that make up two samples. Both samples are red powdery solids at room temperature. Will the other properties of the two samples be the same or different?
a)
The properties will be different because there are more repeating groups of atoms in Sample 1.
b)
The properties will be the same because both samples are powdery solids at room temperature.
c)
The properties will be the same because both samples are red at room temperature.
d)
The properties will be same because the repeating groups of atoms that make up the two samples are the same.
7.
Which one of the following is an example of a pure element?
a)
water
b)
oxygen
c)
sodium chloride
d)
carbon dioxide
8.
Repeating atom groups that are linked together can form large networks known as ____________________________.
a)
molecules
b)
elements
c)
extended structures
d)
chemical formulas
9.
Ethyl butyrate and Isovaleric acid have different _________________________ because the atoms that make up each substance are grouped differently.
a)
properties
b)
color
c)
amounts
d)
chemicals
10.
Which one of the following is NOT an example of a pure element?
a)
oxygen
b)
carbon
c)
silver
d)
water
11.
Which is the smallest unit?
a)
carbon
b)
extended structure
c)
molecule
d)
atom
12.
What was the reddish brown substance in the water in Westfield?
a)
iron oxide
b)
carbon
c)
iron
d)
fertilizer
13.
Ethyl butyrate (C6 H12 O2) is a substance. Each molecule of ethyl butyrate contains how many hydrogen atoms?
a)
6
b)
2
c)
12
d)
0
14.
The diagram above shows the repeating groups of atoms that make up two samples. Will the properties of the two samples likely be the same or different?
a)
The properties will likely be different because there are more repeating groups of atoms in Sample 2.
b)
The properties will likely be different because the repeating groups of atoms that make up each sample are different.
c)
The properties will likely be the same because the repeating groups of atoms that make up the two samples have one of the same types of atoms.
d)
The properties will likely be the same because the repeating groups of atoms that make up the two samples have the same number of atoms.
15.
The more a substance repeats its chemical formula the _______ substance you have.
a)
less
b)
equal
c)
more
d)
cleaner
16.
What is the atom structure of this image?
a)
an atom
b)
an extended structure
c)
a molecule
d)
an element
17.
John Dalton proposed the idea that all matter is made up of tiny pieces called _________
a)
molecules
b)
extended structures
c)
atoms
d)
electrons
18.
What is the atom structure of this image?
a)
an atom
b)
an extended structure
c)
a molecule
d)
an element
19.
What is the atom structure of this image?
a)
an atom
b)
an extended structure
c)
a molecule
d)
an element
20.
Which statement is true about the diagram below?
a)
The samples all have the same properties.
b)
The samples all have different properties.
c)
Samples 1 and 3 have the same properties.
d)
Samples 2 and 3 have the same properties.
21.
What would be considered an atom in this diagram?
a)
Au
b)
NaCl
c)
H2O
d)
Au and NaCl
22.
Substances have different ______________ because they are made of different groups of ______.
a)
properties, molecules
b)
properties, atoms
c)
atoms, properties
d)
molecules, properties
23.
Who had better scientific observations about the properties of the samples? David (on the left) or Luisa (on the right)?
a)
Luisa
b)
David
24.
How can scientists make orange juice smell like "fresh squeezed" juice?
a)
adding chemicals
b)
picking the largest oranges
c)
using oranges from Florida
25.
After reviewing the evidence from Dr. Yung's lab, which claim about the reddish-brown substance is best supported?
a)
Claim 1: The reddish-brown substance is the same as the substance that makes up the pipes.
b)
Claim 2: The reddish-brown substance is the same substance as the fertilizer.
c)
Claim 3: The reddish-brown substance is not the same as either the fertilizer or the substance that makes up the pipes.
26.
How many atoms of carbon (C) are in the following substance?
a)
3
b)
6
c)
12
d)
24
27.
Which substance shares some of the same properties as a diamond but not all the same properties because it's not made of the same repeating groups of atoms?
a)
silver
b)
gold
c)
cubic zirconia
d)
platinum
28.
The temperature at which any substance changes from a liquid to a gas is called ___________________.
a)
boiling point
b)
melting point
c)
freezing point
d)
100 degrees
29.

What is the the relative size of things?

a)

Property

b)

Scale

c)

Model

d)

Extended structure

30.

What is a group of atoms joined together in a particular way?

a)

Substance

b)

Atoms

c)

Molecule

d)

Extended structure

31.

Select all that are correct: What are some examples of properties..

a)

color

b)

melting point

c)

boiling point

d)

smell

32.

A property is something that can be observed about a substance, such as color, smell or boiling point..etc

a)

true

b)

false

33.

Letter and numbers showing the types and number of atoms that repeat to make up a substance.

a)

chemical reactions

b)

model

c)

fertilizer

d)

chemical formula

34.

What is an example of a substance?

a)

Table salt (NaCl)

b)

A pencil

c)

Teddy bear

d)

Person

35.

The relative size of things...

a)

Scale

b)

Measurement

c)

Molecule

d)

Big and Small

36.

Scientists can use properties to help them distinguish between different substances.

a)

True

b)

False

37.

All properties used to distinguish substances can be found with visual observations.

a)

True

b)

False

38.

The temperature at which a substance changes from the solid phase to the liquid phase....

a)

boiling point

b)

melting point

c)

liquid point

d)

condensation point

39.

Why do different substances have different properties?

a)

They are made of different groups of atoms.

b)

They look different.

c)

The same atoms can change their properties when needed.

d)

There are different numbers of the repeating atom groups.

40.

Are these two samples the same substance?

a)

They are the same substances because they are both white powders.

b)

They are the same substances because they both have similar atomic structures.

c)

They are different substances because they have different atoms making them up.

d)

They are the same because they both have the same number of atoms.

41.

When examining the following evidence, which is the best evidence we should use?

a)

ugly color, solid

b)

white, small pieces

c)

white, small, grainy, crystals

42.

How often do chemists from a city's water department test the water supply?

a)

every hour

b)

every day

c)

every week

d)

every month

e)

every year

43.

Which of the following is NOT evidence of a chemical reaction?  (Hint:  Think of the experiments we did with Mrs. Nelson.)

a)

Make chunks (precipitates)

b)

Color change

c)

Changes in energy (gets hot, gets cold, gives off light)

d)

Two things have been stirred together

Similar Resources on Wayground

Grade 6 Science Review Christmas 2020

48 questions

Grade 6 Science Review Christmas 2020

quiz

Worksheet

•

6th Grade

The Material World

38 questions

The Material World

quiz

Worksheet

•

7th Grade

Nutrition In Plants

40 questions

Nutrition In Plants

quiz

Worksheet

•

7th Grade

Human Body Practice Test

44 questions

Human Body Practice Test

quiz

Worksheet

•

6th - 8th Grade

Year 7 Science Toolkit Revision

40 questions

Year 7 Science Toolkit Revision

quiz

Worksheet

•

6th - 7th Grade

Light and Shadow Quiz

40 questions

Light and Shadow Quiz

quiz

Worksheet

•

6th Grade - University

Unit 2 Astronomy Study Guide

45 questions

Unit 2 Astronomy Study Guide

quiz

Worksheet

•

7th Grade