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8.P.1.1 Chemistry (E-C-M)

Total questions: 55

Worksheet time: 41mins

Name
Class
Date
1.

All matter is made of what...

a)

energy

b)

atoms

c)

electrons

d)

compounds

2.

The positive particles of an atom are

a)

electrons

b)

positrons

c)

neutrons

d)

protons

3.

The central region of an atom where its neutrons and protons are is its

a)

nucleus

b)

electron cloud

c)

core

d)

center

4.

Particles in an atom that are neutral and have no charge are

a)

negatrons

b)

electrons

c)

neutrons

d)

protons

5.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
6.

What does the 1.00794 stand for?

a)

Hydrogen

b)

atomic number

c)

atomic mass

d)

atomic explosion

7.

In the modern periodic table, elements are arranged by:

a)

atomic mass

b)

atomic number

c)

valence electrons

d)

number of isotopes

8.

A subatomic particle that has a negative charge is called --

a)

a proton

b)

a neutron

c)

an electron

d)

the nucleus

9.

An arrangement of elements in order of their atomic numbers such that elements with similar properties fall in the same column or group.

a)

Atomic Number

b)

Electron Cloud

c)

Periodic Table

d)

Nucleus

10.

A subatomic particle with a positive charge is called --

a)

a proton

b)

a neutron

c)

an electron

d)

a nucleus

11.
What is the atomic 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
12.
What is the atomic number of this atom?
a)
4
b)
5
c)
9
d)
none of the above
13.
What is the atomic number of this atom?
a)
7
b)
14
c)
21
d)
none of the above
14.
Which particles make up the nucleus of an atom?
a)
protons and neutrons
b)
electrons and protons
c)
electrons, protons, and neutrons
d)
electrons and neutrons
15.
What is the mass number defined as?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
16.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

17.

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

a)

20

b)

38

c)

56

d)

88

18.

Ambient Air

a)

Heterogeneous

b)

Homogeneous

19.
Soil
a)
Heterogeneous
b)
Homogeneous
20.
Sugar water
a)
Heterogeneous
b)
Homogeneous
21.
Vinegar
a)
Heterogeneous
b)
Homogeneous
22.
Soup
a)
Heterogeneous
b)
Homogeneous
23.
Stainless steel
a)
Heterogeneous
b)
Homogeneous
24.
What is a mixture?
a)
elements chemically combined
b)
a combination of different things
c)
it is found on the Periodic Table 
d)
it is made of chemical
25.
What is this?
a)
Compound
b)
Element
c)
Mixture of elements
d)
Mixture of compounds
26.
What is this?
a)
Mixture of compounds and elements
b)
Compound
c)
Element
d)
Mixture of compounds
27.
What is this?
a)
Compound
b)
Element
c)
Mixture of elements
d)
Mixture of compounds
28.

What kind of mixture is shown in the picture?

a)

Homogeneous

b)

Heterogeneous

29.

What kind of mixture is shown in the picture?

a)

Homogeneous

b)

Heterogeneous

30.

What kind of mixture is shown in the picture?

a)

Homogeneous

b)

Heterogeneous

31.
What are the states of matter?
a)
solid, liquid, and juice
b)
solid and liquid
c)
solid and gas
d)
solid, liquid, and gas
32.

What is the definition of matter?

a)

Anything that has mass and takes up space

b)

A substance that is liquid, solid, or gas

c)

Anything that is pure

d)

Anything that you can see or hold

33.

two or more different physical forms in which an element can exist. Graphite, charcoal, and diamond are all allotropes of carbon.

a)

actinides

b)

heterogeneous

c)

allotropes

d)

solution

34.

Smallest possible unit into which matter can be divided, while still maintaining its properties

a)

atom

b)

molecule

c)

element

d)

compound

35.

The smallest particle in a chemical element or compound that has the chemical properties of that element or compound.

a)

mixture

b)

molecule

c)

element

d)

compound

36.

Simplest form of pure substance.  They cannot be broken into anything else by physical or chemical means.

a)

compound

b)

mixture

c)

molecule

d)

element

37.

Pure substances that are the unions of two or more elements.  They can be broken into simpler substances by chemical means.

a)

compound

b)

element

c)

mixture

d)

atomic mass

38.

Two or more substances that are not chemically combined with each other and can be separated by physical means.  The substances in the mixture retain their individual properties.

a)

compound

b)

homogeneous mixture

c)

mixture

d)

heterogenous mixture

39.

The mass of a given atom or molecule.  Number of protons and neutrons added together.

a)

tomic mass

b)

atomic number

c)

atomic mass

d)

molecule

40.

The number of protons in the nucleus of an atom.

a)

heterogenous mixture

b)

homogeneous mixture

c)

atomic number

d)

atomic mass

41.

A mixture that appears to be the same throughout.

a)

homogeneous mixture

b)

proton

c)

heterogenous mixture

d)

neutron

42.

A mixture that does not appear to be the same throughout.

a)

homogeneous mixture

b)

electron

c)

heterogenous mixture

d)

atomic number

43.

Positively charged particles that help make up the nucleus of the atom.They are equal to the electrons and atomic number of the atom.

a)

neutron

b)

proton

c)

electron

d)

nucleus

44.

Neutral particles; have no electric charge and help make up the nucleus of the atom. They contribute to the atomic mass.

a)

proton

b)

electric

c)

neutron

d)

electron

45.

Negatively charged particles found outside the nucleus in electron orbits/levels and are equal to the number of protons.  They are involved in the formation of chemical bonds.

a)

proton

b)

neutron

c)

electron

d)

electric

46.

What is the best example of a pure substance?

a)

peanuts

b)

milk

c)

gold

d)

air

47.

Which of the following is true regarding mixtures?

a)

One substance not combined with any other substances.

b)

Two or more substances physically mixed and can be separated.

c)

Two or more substances that are impossible to separate.

d)

One substance that forms a compound alone.

48.

Which of the following can be classified as heterogeneous mixture?

a)

Tea

b)

Salad

c)

Kool-aid

d)

Salt Water

49.

What must happen for a mixture to be considered homogeneous?

a)

Particles must be uniform throughout and difficult to see parts.

b)

Particles must be non-uniform throughout and easy to see parts.

c)

Particles must be uniform throughout but easy to see parts.

d)

Particles must be non-uniform throughout and difficult to see parts.

50.

On an element square , which number tells how many protons are in an atom?

a)

Periodic Number

b)

Atomic Number

c)

Atomic Mass

d)

Element size number

51.

Which number tells you how many protons and neutrons are in an atom?

a)

Periodic Number

b)

Atomic Number

c)

Atomic Mass

d)

Element size number

52.

Which number indirectly tells you the number of electrons in a balanced (neutral) atom?

a)

Perodic Number

b)

Atomic Number

c)

Atomic Mass

d)

Element size number

53.

What phase is this?

a)

Gas

b)

Liquid

c)

Solid

54.

What phase is this?

a)

Solid

b)

Liquid

c)

Gas

55.

What phase is this?

a)

Solid

b)

Liquid

c)

Gas

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