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8th Q1 Review

Total questions: 60

Worksheet time: 38mins

Name
Class
Date
1.

the basic structural unit of matter

a)

atom

b)

matter

c)

element

d)

nucleus

2.

a collection of atoms of one type that cannot be broken down into simpler substances by ordinary chemical or physical means

a)

element

b)

subatomic particle

c)

electron

d)

matter

3.

the positively charged subatomic particle contained in the nucleus of an atom

a)

proton

b)

neutron

c)

electron

d)

matter

4.

What is the atomic number of Barium, Ba? (enlarge the periodic table)

a)

20

b)

38

c)

56

d)

88

5.

How many protons are in a sodium atom, Na? (tap to enlarge the periodic table)

a)

Sodium has 1 proton.

b)

Sodium has 3 protons.

c)

Sodium has 11 protons

6.

An element has the mass number 12 and atomic number 6. The number of neutrons in it is:

a)

6

b)

10

c)

4

d)

8

7.

If an atom has 10 electrons, how many protons does it have?

a)

0

b)

1

c)

10

d)

5

8.

Negatively charged particle

a)

proton

b)

neutron

c)

electron

9.

Positively charge particle

a)

proton

b)

neutron

c)

electron

10.

In a famous experiment conducted by Ernest Rutherford, positively charged alpha particles were scattered by a thin gold foil. Which of the following is a conclusion that resulted from this experiment?

a)

The nucleus is negatively charged

b)

The atom is a dense solid and is indivisible

c)

The mass is conserved when atoms react chemically

d)

The nucleus is very small and the atom is mostly empty space

11.
Sodium has an atomic number of 11, how many protons does this atom have?
a)
22
b)
11
c)
12
d)
2
12.
The following element key shows how many protons?
a)
16
b)
15.999
c)
Oxygen
d)
8
13.

What is the atomic mass of Neon?

a)

10

b)

20.18

c)

10.18

d)

9.82

14.
What contribution did John Dalton make to atomic theory? 
a)
He discovered that every atom was positively charged. 
b)
He discovered that every element consisted of one type of atom.  
c)
He discovered that atoms had nuclei. 
d)
He discovered that atoms could be divided into smaller parts. 
15.
Theory or Law???  Changes with new observations.
a)
Theory
b)
Law
16.
Theory or Law???  Is a well-tested EXPLANATION for a wide range of observations and experimental results.
a)
Law
b)
Theory
17.
What does the nucleus of an atom contain?
a)
Electrons and neutrons
b)
Protons and neutrons
c)
Neutrinos and positrons
d)
DNA and RN
18.
What is the mass number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
19.

The subatomic particle with a neutral charge is:

a)

protons

b)

electrons

c)

neutrons

d)

cloud

20.
ethyl alcohol boils at 79⁰C
a)
physical change
b)
chemical change
21.
water freezes at 0⁰C
a)
physical change
b)
chemical change
22.
The steam coming off the pot of boiling water is an example of....
a)
a solid becoming a liquid
b)
a liquid becoming a solid
c)
a liquid becoming a gas
d)
a gas becoming a liquid
23.
Define a liquid.
a)
Indefinite shape, indefinite volume
b)
Definite shape, definite volume
c)
Found in stars
d)
Definite volume, indefinite shape
24.
A gas
a)
has a definite shape but no definite volume
b)
has a definite volume but no definite shape
c)
has fast-moving particles
25.
Which of the three states represents a liquid? How do you know?
a)
State A
b)
State B
c)
State C
d)
None
26.
Air is made of matter because it has mass and takes up space.
a)
True
b)
False
27.

Particles in motion have ___________ energy.

a)

thermal

b)

kinetic

c)

potential

d)

sound

28.

which state of matter has the most kinetic energy?

a)

colloid

b)

gas

c)

liquid

d)

solid

29.

Which one has the highest melting point?

a)

lead

b)

aluminum

c)

iron

d)

water

30.

A physical property that describes the ability to transfer heat or electrical energy

a)

conductivity

b)

hardness

c)

physical change

d)

physical properties

31.

The measurement of the ability of a solid to dissolve in a liquid

a)

conductivity

b)

hardness

c)

physical change

d)

solubility

32.

A change to a substance without forming a new substance, such as changing size or state of matter

a)

conductivity

b)

hardness

c)

physical change

d)

physical properties

33.

Characteristics that can be observed or measured; for example, color, melting point, and conductivity

a)

conductivity

b)

hardness

c)

physical change

d)

physical properties

34.

Molecules in a ________ have definite shape and definite volume.

a)

solid

b)

liquid

c)

gas

d)

neither

35.

Molecules in a _____ have definite volume and no shape.

a)

solid

b)

liquid

c)

gas

d)

neither

36.

Molecules in a ______ have no shape and no volume.

a)

solid

b)

liquid

c)

gas

d)

neither

37.

Objects that are more dense than water will ______.

a)

sink

b)

float

c)

neither

38.

Objects less dense than water will _____.

a)

float

b)

sink

c)

neither

39.

Atoms combine to make a ________. Ex: H20

a)

atom

b)

molecule

c)

electron

d)

reflection

40.

Salt is

a)

not soluble in water.

b)

less dense in water.

c)

soluble in water.

d)

magnetic.

41.

An iron nail is

a)

magnetic.

b)

more dense in water.

c)

not soluble in water.

d)

All of the above

42.

flammability

a)

physical property

b)

chemical property

43.

reaction with an acid

a)

physical property

b)

chemical property

44.

color

a)

physical property

b)

chemical property

45.

combustibility

a)

physical property

b)

chemical property

46.

temperature

a)

physical property

b)

chemical property

47.

What does this illustrate

a)

Elements

b)

Compunds

c)

Mixture of Elements and Compunds

d)

Mixture of Compounds

48.

What does this pic illustrate?

a)

Element

b)

Mixture of Compunds

c)

Mixture of elemets

d)

Compounds

49.

How are Mixtures made?

a)

Chemically

b)

Physically

c)

Physically and Chemically

d)

Found in Nature

50.

What is considered the simplest form of matter?

a)

Compounds

b)

Colloids

c)

Solutions

d)

Elements

51.

Another name for a homogenous mixture is?

a)

colloid

b)

suspension

c)

solution

d)

compound

52.
Contains two or more atoms combined
a)
Elements
b)
Compounds
c)
Mixtures
53.
The air is a _________. 
a)
element 
b)
mixture 
c)
compound 
d)
energy 
54.

Examples are diamonds (C) and Uranium (U)

a)

elements

b)

mixtures

c)

compounds

55.
Is sugar (C12H22O11) an element or a compound?
a)
Element
b)
Compound
56.
What is salad?
a)
element
b)
compound
c)
mixture
57.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements and Compounds
d)
Mixture of Elements
58.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements & Compounds
d)
Mixture of Compounds
59.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
60.

What is pond water?

a)

Element

b)

Compound

c)

Mixture

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