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Elements and Compounds

Total questions: 129

Worksheet time: 5hrs 28mins

Name
Class
Date
1.
all matter is made of what 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
2.
If you want to know which atom an element is, then count the _____
a)
protons
b)
neutrons
c)
electrons
d)
nucleons
3.

Atoms cannot be divided by ordinary means.

a)

True

b)

False

4.

Atoms are the _________ of all matter.

a)

Indivisible

b)

prettiest

c)

Building block

d)

Nucleus

5.

During the __________ scientists began to develop a theory as to how atoms work.

a)

1600s

b)

1700s

c)

1800s

d)

1900s

6.

There are ______ elements that occur naturally

a)

80

b)

98

c)

100

d)

150

7.

Atoms have the same number of

a)

Protons/electron

b)

Ions/bond

c)

Neutrons/nuetral

8.

What is the smallest piece of matter that still has properties of that matter?

a)

element

b)

atom

c)

proton

9.

In the modern periodic table, elements are arranged by:

a)

atomic mass

b)

atomic number

c)

valence electrons

d)

number of isotopes

10.

True/False: Compounds are made of two or more different elements.

a)

True

b)

False

11.
Something that takes up space and has mass.
a)
volume
b)
matter
c)
mass
d)
density
12.

Two or more atoms joined together for a(n)...

a)

Element

b)

Compound

c)

Molecule

d)

Mixture

13.
What cannot be broken down into other substances?
a)
Compound
b)
Mixture
c)
Solids
d)
Element
14.
An element is made up of only one kind of _____.
a)
isotope
b)
plastic
c)
atom
d)
metal
15.

The smallest particle into which an element can be divided and still be the same element is a(n)

a)

proton

b)

neutron

c)

electron

d)

atom

16.
H is the chemical symbol for which element?
a)
Helium
b)
Hydrogen
c)
Mercury
17.
Na is the chemical symbol for which element? 
a)
Sodium
b)
Nitrogen
c)
Neon
18.
K is the chemical symbol for which element? 
a)
Krypton
b)
Potassium
c)
Knox
19.
Ca is the chemical symbol for which element? 
a)
Carbon
b)
Chlorine
c)
Calcium
20.
Fe is the chemical symbol for which element? 
a)
Freon
b)
Iron
c)
Flourine
21.
C is the chemical symbol for which element? 
a)
Calcium
b)
Chlorine
c)
Carbon
22.
N is the chemical symbol for which element? 
a)
Sodium
b)
Nitrogen
c)
Nickel
23.
O is the chemical symbol for which element? 
a)
Osmium
b)
Odell
c)
Oxygen
24.
Si is the chemical symbol for which element? 
a)
Silicon
b)
Sodium
c)
Sulfur
25.
He is the chemical symbol for which element? 
a)
Heehaw
b)
Helfion
c)
Helium
26.
The chemical symbol for hydrogen is
a)
Hy
b)
He
c)
H
27.
The chemical symbol for sodium is
a)
S
b)
So
c)
Na
28.

The chemical symbol for calcium is

a)

C

b)

Ca

c)

Na

29.
The chemical symbol for iron is
a)
I
b)
Fi
c)
Fe
30.
The chemical symbol for carbon is
a)
C
b)
Ca
c)
Na
31.
The chemical symbol for nitrogen is
a)
N
b)
Ni
c)
Na
32.

Silver

a)

S

b)

Ag

c)

Au

d)

Sn

33.

Copper

a)

Cu

b)

C

c)

Cr

d)

Co

34.

Chemical Symbol for Magnesium

a)

Mn

b)

Mg

c)

Me

d)

Mm

35.

Cl represents

a)

chlorine

b)

carbon

c)

calcium

d)

lomine

36.

Chemical symbol for mercury

a)

Me

b)

Hg

c)

He

d)

My

37.

Boron

(a)  

38.

Beryllium

(a)  

39.

Lithium

(a)  

40.

Al is the chemical symbol for *

a)

astatine

b)

aluminium

c)

argon

d)

silver

41.

Name this compound MgCl2

a)

magnesium chlorine

b)

chlorine magnesium

c)

magnesium chloride

d)

magneium chlorate

42.

Name the compound with the formula KOH

a)

potassium hydride

b)

potassium oxide

c)

potassium oxygen hydrogen

d)

potassium hydroxide

43.

Who greatly worked in the discovery of charge splitting up water molecules

a)

Michael Faraday

b)

Alessandro Volta

c)

Thomas Edison

d)

Benjamin Franklin

44.

The periodic law states that

a)

elements are gases, solids, or liquids/

b)

mercury is a liquid at room temperature.

c)

properties of elements change periodically with the atomic numbers of the elements.

d)

some elements stay in a liquid state only for short periods.

45.

The elements in each vertical column on the periodic table usually have similar properties and are called a(n)

a)

period

b)

group

c)

element

d)

property

46.

The elements to the right of the zigzag line on the periodic table are called

a)

metalloids

b)

conductors

c)

metals

d)

nonmetals

47.

Most metals are

a)

solid at room temperature.

b)

bad conductors of electric current.

c)

dull.

d)

not malleable.

48.

The properties of elements in a horizontal row of the periodic table follow

a)

a non-repeating pattern

b)

a periodic pattern

c)

no pattern

d)

an unpredictable patter

49.

Elements on the periodic table are arranged in order of

a)

increasing density

b)

decreasing density

c)

increasing atomic number

d)

decreasing atomic number

50.

Which of the following indicates that elements have shared properties?

a)

periods/rows

b)

groups/families

c)

same number of protons in the nucleus

d)

atomic masses

51.

How many protons are in the nucleus of neon (Ne)?

a)

20

b)

10

c)

20.18

d)

5

52.

An unknown atom has 32 protons. What is the unknown atom?

a)

sulfur (S)

b)

carbon (c)

c)

sodium (Na)

d)

germanium (Ge)

53.

Match the element with it's element:

Nitrogen

a)

S

b)

Na

c)

Hg

d)

N

54.

Elements in the same ____________ are thought to have similar properties.

a)

category

b)

row

c)

period

d)

group

55.

How are elements organized on the periodic table?

a)

by atomic number

b)

by atomic weight

c)

by electron number

d)

alphabetically

56.

____________ created the periodic table by arranging the elements in a grid according to their properties.

a)

gregor mendel

b)

albert einstein

c)

johannes kepler

d)

dmitiri mendeleev

57.

The smallest particles that make up matter

a)

are too small to be seen with the unaided eye

b)

are about the size of marbles

c)

are about the size of pinheads

d)

can be seen with the unaided eye only at certain temperatures

58.

A Russian chemist who was given credit for first arranging elements in a usable manner

a)

Rutherford

b)

Mendeleev

c)

Mosley

d)

Dalton

59.

How is the periodic table organized?

a)

Periods are horizontal and groups are vertical

b)

Periods and groups are horizontal

c)

Periods are vertical and groups are horizontal

d)

Periods and groups are vertical

60.

Which elements have the most similar chemical properties?

a)

K and Na

b)

K and Ca

c)

K and Cl

d)

K and S

61.

In a modern periodic table, elements are arranged in order of?

a)

atomic mass

b)

number of isotopes

c)

atomic number

d)

number of neutrons

62.

How many periods does the periodic table have?

a)

18

b)

7

c)

9

d)

5

63.

Which elements are in the same group or family?

a)

Na and Mg

b)

Na and H

c)

Li and Be

d)

K and Ca

64.

Which elements are in the same period?

a)

F and Cl

b)

N and P

c)

O and S

d)

N and O

65.

Most elements on the periodic table are

a)

gases

b)

metals

c)

liquids

d)

nonmetals

66.

Which two elements are most closely related?

a)

Na (11) and Re (75)

b)

Na (11) and Fr (87)

c)

Na (11) and Mg (12)

d)

Na (11) and Al (13)

67.

Which element is found in period 4, group 6?

a)

Hafnium (Hf)

b)

Cesium (Cs)

c)

Chromium (Cr)

d)

Tungsten (W)

68.

From an elements location on the periodic table, you can predict

a)

its chemical name

b)

when it was discovered

c)

its properties

d)

its chemical name

69.

What classification contains the most elements?

a)

metals

b)

nonmetals

c)

metalloids

d)

transition elements

70.

Which chemical symbol is written correctly?

a)

NA

b)

nA

c)

Na

d)

na

71.

Elements have similar properties are in the same

a)

group

b)

row

c)

period

d)

none of these

72.

Elements to the right of the zigzag line are most likely

a)

metals

b)

nonmetals

c)

metalloids

d)

quarks

73.

The protons in an element is the element's

a)

atomic mass

b)

number of neutrons

c)

atomic number

d)

none of these

74.

The letter, C, is a ... of carbon.

a)

Name

b)

Chemical Symbol

c)

Nickname

d)

Pseudonym

75.

The vertical columns of the periodic table are called...

a)

Periods

b)

Families

c)

Chemical Symbols

d)

Groups

76.

how many groups are in the periodic table

a)

7

b)

8

c)

10

d)

18

77.

What element is circled?

a)

Halogen

b)

Helium

c)

Hydrogen

d)

Hallium

78.

Which element is INCORRECTLY matched with its symbol?

a)

Cu / copper

b)

Pb / lead

c)

K / potassium

d)

B / bismuth

79.

Write the chemical symbol for sulfur

(a)  

80.

Write the chemical symbol fluorine

(a)  

81.

Element or Not an Element? Is this on the periodic table??

a)

Yes

b)

No

c)

Possibly depending on the weather

82.

O2 is the symbol for_______.

a)

oxygen

b)

ozone

c)

oxygen gas

d)

osmium

83.
The atomic number determines_____________________.
a)
its symbol
b)
the number of protons and neutrons
c)
what the element is
d)
the number of protons in the atom
84.
All matter is made of tiny particles called___________________
a)
atoms
b)
bits
c)
dust
d)
molecules
85.
The symbol of an element is always the first 2 letters of the element's name.
a)
true
b)
false
86.
Can an element be broken down into simpler substances and keep the properties of the element?
a)
yes
b)
no
87.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
88.

What element is in group 12, period 4?

a)

Zn

b)

Cn

c)

Hg

d)

Cd

89.

On the periodic table, elements that have the same number of valence electrons and similar properties are called ____________.

a)

Cousins

b)

Rows

c)

Periods

d)

Groups or families

90.

Who was the chemist that designed a table of elements in which the elements were organized by atomic mass?

a)

Henry Mosley

b)

Democritus

c)

Albert Einstein

d)

Dimitri Mendeleev

91.

Where are metals on the periodic table?

a)

on the bottom and on the top

b)

on the left side and in the middle

c)

on the right side and in the middle

92.

The horizontal rows on the periodic table are called:

a)

shells

b)

periods

c)

groups

93.

Any substance that cannot be broken down into simpler substances is called.......

a)

Atom

b)

Element

c)

Molecule

d)

Compound

94.

This forms when two or more elements chemically combine

a)

Atom

b)

Element

c)

Compound

d)

Oxygen

95.

The smallest unit of any compound is called a

a)

atom

b)

element

c)

compound

d)

molecule

96.

______ form when two or more elements combine chemically

a)

compounds

b)

elements

c)

atoms

d)

periodic tables

97.

The properties of a compound are the same as the properties of the elements making up the compound.

a)

True

b)

False

98.

A chemical symbol is the abbreviated way to write a compound's name.

a)

True

b)

False

99.

Name for NaH

a)

sodium hydrogen

b)

potassium hydride

c)

sodium hydride

d)

potassium hydrogen

100.

Name for LiOH

a)

lithium hydrogen oxide

b)

lithium hydroxide

c)

lithium (II) hydroxide

d)

lithium (I) hydroxide

101.

Name for CO

a)

carbon monoxide

b)

carbon oxide

c)

monocarbon oxide

d)

carbide monoxide

102.

Name for BaO

a)

Barium oxide

b)

Barium monoxide

c)

Monobarium oxide

d)

Monobarium monoxide

103.
Name the following ionic compound: BeCl2
a)
beryllium chlorine
b)
beryllium II chloride
c)
beryllium chloride
d)
beryllium dichloride
104.

How many Oxygen atoms are in H2O?

a)

1

b)

2

c)

0

d)

4

105.
Name...NaCl
a)
sodium bromide
b)
sodium chloride
c)
sodium chorate
d)
potassium iodide
106.

name this compound

a)

ammonium phosphate

b)

ammonium sulfate

c)

aluminium phosphate

d)

aluminium sulfate

107.

the compound name is:

a)

lithium hydroxalate

b)

lithium oxide

c)

lithium bihydroxide

d)

lithium hydroxide

108.
Which of the following formulas represents carbon monoxide?
a)
CO
b)
CO2
c)
NO
d)
SO2
109.
What holds atoms together?
a)
chemical bond
b)
chemical glue
c)
gold bond
d)
chemical formula
110.

Compounds have _________________ properties, compared to the elements that form them.

a)

similar

b)

different

111.

Which statement best describes the relationship between atoms & molecules.

a)

molecules are made of atoms that are chemically bonded together.

b)

atoms are made of molecules that are chemically bonded together.

c)

molecules are made of a mixture of atoms and compounds.

d)

atoms are made of protons, neutrons & electrons.

112.

Which statement best describes the a compound. Check all that apply.

a)

atoms are the smallest unit of a compound.

b)

the smallest unit of a compound is a molecule.

c)

compounds are chemically different from the elements that compose them.

d)

when atoms combine to form a molecule of a compound they become stable.

113.

Which statement describes the model that shows a compound.

a)

Model X shows a compound because there are two different types of atoms

b)

Model X shows a compound because two different atoms are chemically bonded together.

c)

Model Y dhows a compound because there is more than one type of atom.

d)

Model Y shows a compound because each pair of matching atoms can form a chemical bond.

114.

How many atoms in the compound Ni2O3?

a)

5

b)

6

c)

2

d)

3

115.

How many atoms total in the compound K3P?

a)

1

b)

2

c)

3

d)

4

116.

How many atoms of Hydrogen in HF?

a)

1

b)

2

c)

0

117.

Which two elements are in the compound Sc2S3?

a)

Sulfur and Strontium

b)

Strontium and Scandium

c)

Scandium and Sulfur

d)

Sulfur and Carbon

118.

How many atoms in the compound NaOH?

a)

2

b)

3

c)

6

d)

4

119.

A compound is a pure substance composed of two or more elements, combined by chemical means, in a definite ratio. Which container represents a chemical compound? Hint: An elements chemical symbol only contains ONE uppercase letter.

a)

Cl

b)

Na

c)

N2

d)

H2O

120.

Which model represents the chemical formula NO2, nitrogen dioxide?

a)

A

b)

B

c)

C

d)

D

121.

How many elements are represented in this chemical formula for sodium bicarbonate (Baking Soda): NaHCO3 ?

a)

5

b)

2

c)

4

d)

1

122.

How many atoms in a molecule of water? H2O

a)

4

b)

3

c)

2

d)

1

123.

A subscript is

a)

the number of atoms that each element has in a chemical formula.

b)

at the pharmacy.

c)

the number of molecules.

d)

a compound.

124.

The chemical formula for water

a)

HCl

b)

NaCl

c)

O₂

d)

H₂O

125.

The chemical formula for diatomic oxygen

a)

HCl

b)

NaCl

c)

O₂

d)

H₂O

126.

How many hydrogen atoms are in one water molecule? (water = H2O)

a)

0

b)

1

c)

2

d)

3

127.

How many carbon atoms are in one molecule of carbon dioxide? (carbon dioxide = CO2)

a)

0

b)

1

c)

2

d)

3

128.

How many atoms IN TOTAL make up one molecule of glucose? (glucose = C6H12O6)

a)

6

b)

12

c)

18

d)

24

129.

What is the chemical formula for table salt?

a)

NaCl

b)

CO2

c)

NH3

d)

C6H12O6

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