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#3-4: Atoms, Elements, Molecules & Periodic Table of Elements

Total questions: 50

Worksheet time: 36mins

Name
Class
Date
1.
All matter is made of
a)
atoms
b)
cells
2.
The atomic number tells you what?
a)
number of electrons
b)
number of protons
c)
number of neutrons
d)
both electrons and protons in an atom.
3.
A neutron has a charge of
a)
+2
b)
No charge
c)
-1
d)
+1
4.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
5.
How many protons are in Beryllium?
a)
4
b)
9
c)
5
d)
2
6.

A nucleus of an atom contains what two parts?

a)

Electrons and Protons

b)

Neutrons and Electrons

c)

Protons and Neutrons

7.

How many neutrons does Chlorine (Cl) with an atomic number of 17 and an atomic mass of 35.

a)

17

b)

18

c)

19

8.
Which type of subatomic particles have the LEAST amount of mass?
a)
protons
b)
electrons
c)
neutrons
d)
nucleus
9.
The number of protons is equal to 
a)
the atomic number
b)
the number of neutrons
c)
the energy levels
d)
the periodic table groups
10.
The chart that shows the arrangement of elements in order by their atomic number
a)
Electron Cloud
b)
Periodic Table
c)
amu
d)
Atomic Mass
11.
What is the atomic mass of "F"
a)
9
b)
18
c)
17
d)
19
12.

Which statement correctly describes the location and charge of the electrons in an atom?

a)

The electrons are inside the nucleus and have a negative charge

b)

The electrons are inside the nucleus and have no charge

c)

The electrons are outside the nucleus and have a negative charge

d)

The electrons are outside the nucleus and have no charge

13.

How do you calculate the number of neutrons?

a)

Mass number- atomic number

b)

mass number/atomic number

c)

mass number + atomic number

d)

mass number x atomic number

14.
Metalloids can be described as...
a)
same as nonmetals
b)
bad conductors
c)
characteristics of metals and nonmetals
d)
same as metals
15.

The horizontal rows on the periodic table are called

a)

groups

b)

families

c)

periods

d)

atomic numbers

16.

Each vertical column on the periodic table is called a...

a)

group

b)

tower

c)

period

d)

crew

17.

Periodic Table organizes elements by __.

a)

atomic mass

b)

atomic number

c)

number of neutrons

d)

size of atom

18.

C, Fe, He, and Na are the elements' __.

a)

abbreviations

b)

formulas

c)

symbols

d)

short cuts

19.

What is the electrical charge of the electron?

a)

positive

b)

negative

c)

neutral

20.

What does the Atomic Number tell us about an element's atom? (Check ALL that are correct.)

a)

how many protons

b)

how many electrons

c)

how many neutrons

d)

how many protons and neutrons in nucleus

21.

Which particle has a positive charge?

a)

neutron

b)

electron

c)

proton

d)

megatron

22.

The elements are in order by ____________ atomic number.

a)

increasing

b)

decreasing

23.

Which is true about Groups on the periodic table? Check all that apply

a)

Also called families.

b)

Are the vertical columns (up & down) on the table

c)

Have the same number of electrons in outer energy level

d)

Are in alphabetic order

24.

Metals can be described with the following. (check all that apply)

a)

hard and solid

b)

shiny or lustrous

c)

good conductors

d)

give away electrons

e)

a gas

25.

Non-metals can be described with the following. (check all that apply)

a)

Can be a liquid

b)

Can be a gas

c)

Take electrons from other atoms

d)

Are good insulators

e)

Are very shiny

26.
Elements in the same ________ are more chemically similar.
a)
group
b)
period
c)
club
d)
table
27.

The electrons in the outermost shell (main energy level) of an atom; these are the electrons involved in forming bonds

a)

alkali metals (group 1)

b)

Halogens (Group 17)

c)

atomic number

d)

valence electrons

28.

Which is the best description of an element?

a)

A substance that cannot be broken down into simpler substances

b)

A collection of atoms that have different abilities when joined together

c)

A man-made mineral

d)

A mixture of substances

29.

Elements in the same group or family have the same number of

a)

neutrons

b)

valence electrons

c)

electrons

d)

energy levels

30.

"Na" is the element's

a)

Chemical Formula

b)

Compound

c)

Name

d)

Chemical Symbol

31.
What do we call a substance consisting of a single atom?
a)
coefficient
b)
element
c)
compound
d)
molecule
32.
What do we call a chemical substance made up of 2 or more different types atoms bonded together?
a)
formula
b)
atom
c)
subscript
d)
compound
33.
All ____________ are made up of two or more atoms bonded together.
a)
atoms
b)
molecules
c)
electrons
d)
elements
34.
Bonds between atoms in a molecule form as a result of the sharing  of?
a)
formulas
b)
electrons
c)
atoms
d)
chemicals
35.
A recipe for a chemical substance is called a ________ _________.
a)
coefficent
b)
chemical formula
c)
Oxygen
d)
atom
36.
Atoms are most stable when their outer shell is complete.
a)
true
b)
false
37.
What is a valence electron?
a)
The sum of neutrons and protons.
b)
The # of electrons in the last shell.
c)
A type of bond.
d)
A popular compound.
38.
a)
2
b)
8
c)
3
d)
13
39.

What is a mixture?

a)

A substance that is made up of one type of atom and can't be reduced to simpler substances.

b)

A substance made of two or more different atoms chemically bonded to one another. They can only be destroyed by chemical processes.

c)

A material containing two or more elements or compounds that are in close contact and are mixed in any proportion. They can be separated by physical means.

40.

Which statement is true about compounds?

a)

a pure substance where two or more elements are chemically combined

b)

a homogenous mixture of 2 or more elements

c)

a pure substance containing only one type of atom

d)

a heterogeneous mixture of 2 or more elements chemically combined

41.

What type of matter has an non-uniform existence?

a)

pure substance

b)

homogeneous mixture

c)

heterogenous mixture

d)

All the above

42.

A pure substance that cannot be broken down into any other substance.

a)

Elements

b)

Compounds

c)

Mixtures

43.

Chex mix is a

a)

Mixture

b)

Compound

c)

Element

44.
What does the C represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
45.

the basic structural unit of matter

a)

atom

b)

matter

c)

element

d)

nucleus

46.

a subatomic particle, contained in the nucleus of an atom, having the same mass as a proton but no electrical charge

a)

proton

b)

neutron

c)

electron

d)

matter

47.

a unique number for each element that equals the number of protons in an atom of that element

a)

element name

b)

element symbol

c)

atomic number

d)

atomic mass

48.

what is the biggest group on the table

a)

metals

b)

nonmetals

c)

metaloids

d)

halogens

49.

an arrangement of the elements according to their atomic numbers so that elements with similar properties are in the same column and properties repeat from row to row

a)

Periodic Table of Elements

b)

Atomic Theory

c)

Isotopes

d)

Subatomic Particles

50.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent

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