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Matter, Density, and Properties Worksheet Quiz (Grade 8)

Total questions: 126

Worksheet time: 1hrs 3mins

Name
Class
Date
1.

Which state of matter does not have a definite shape but has a definite volume?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

2.

In which state of matter are the molecules spaced farthest apart?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

3.

How do you find the density of an object?

a)

mass × volume

b)

mass ÷ volume

c)

volume ÷ mass

d)

mass + volume

4.

What is density?

a)

The amount of matter in an object

b)

The amount of mass within a given volume

c)

The space an object occupies

d)

The force that attracts objects

5.

What is the density of water?

a)

0.50.5 g/mL

b)

11 g/mL

c)

1.51.5 g/mL

d)

22 g/mL

6.

What makes an object float in water?

a)

It is more dense than water

b)

It is less dense than water

c)

It has greater mass than water

d)

It has no volume

7.

What is mass?

a)

Amount of matter in an object

b)

Amount of space an object occupies

c)

Amount of weight an object has

d)

Amount of force an object applies

8.

What is matter?

a)

Anything that has mass and occupies space

b)

Anything that produces light

c)

Anything that conducts electricity

d)

Anything that floats in water

9.

Which statement is true about the liquids: Karo Syrup, dish soap, and honey?

a)

Karo Syrup is less dense than dish soap and honey

b)

Karo Syrup is more dense than dish soap, but less dense than honey

c)

Karo Syrup is more dense than honey and dish soap

d)

Karo Syrup has the same density as dish soap and honey

10.

A paper clip has a mass of 99 g and a volume of 33 cm 3^3 . What is its density?

a)

11 g/cm 3^3

b)

22 g/cm 3^3

c)

33 g/cm 3^3

d)

44 g/cm 3^3

11.

A rock has a volume of 3030 cm 3^3 and a mass of 6060 g. What is its density?

a)

11 g/cm 3^3

b)

22 g/cm 3^3

c)

33 g/cm 3^3

d)

44 g/cm 3^3

12.

A rock has a volume of 1515 cm 3^3 and a mass of 4545 g. What is its density?

a)

11 g/cm 3^3

b)

22 g/cm 3^3

c)

33 g/cm 3^3

d)

44 g/cm 3^3

13.

Alcohol ( 0.790.79 g/mL), corn syrup ( 1.381.38 g/mL), water ( 1.001.00 g/mL), and cooking oil ( 0.930.93 g/mL) are poured into a beaker. Which liquid will sink to the bottom?

a)

Alcohol

b)

Corn syrup

c)

Water

d)

Cooking oil

14.

Objects or liquids with higher density are more likely to do what?

a)

Float

b)

Sink

c)

Melt

d)

Evaporate

15.

What are characteristics that can be observed with the five senses or measured without changing the object?

a)

Chemical properties

b)

Physical properties

c)

Magnetic properties

d)

Biological properties

16.

If you add heat to a liquid, what will it become?

a)

Solid

b)

Gas

c)

Plasma

d)

Condensate

17.

Which state of matter has the least energy?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

18.

Which description applies to a liquid?

a)

Indefinite volume and definite shape

b)

Definite volume and indefinite shape

c)

Definite volume and definite shape

d)

Indefinite volume and indefinite shape

19.

What is a reactant?

a)

The starting ingredients of a chemical reaction

b)

The end products of a chemical reaction

c)

A catalyst that speeds up a reaction

d)

A substance that prevents a reaction

20.

What is a product in a chemical reaction?

a)

A starting ingredient

b)

What is made in a chemical reaction

c)

A substance that slows the reaction

d)

A container used for reactions

21.

Which state of matter does not have a definite shape or a definite volume?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

22.

Which is an example of a solution?

a)

Sand and water

b)

Sugar and water

c)

Oil and water

d)

Pebbles and water

23.

Which term describes how the surface feels (smooth vs. rough)?

a)

Texture

b)

Hardness

c)

Viscosity

d)

Luster

24.

What are physical properties?

a)

Properties measured only after a chemical change

b)

Properties of matter that can be observed, measured, or changed without changing the matter itself

c)

Properties that involve heat and electricity

d)

Properties that describe living organisms

25.

What is a mixture?

a)

A pure substance

b)

A combination of two or more substances that can be easily separated in some physical way

c)

A chemical compound that cannot be separated

d)

A gas dissolved in a liquid

26.

What is dissolving?

a)

Breaking down substances into small pieces and spreading evenly throughout a liquid

b)

Separating solids from liquids by filtering

c)

Heating a liquid until it evaporates

d)

Cooling a gas until it condenses

27.

What is magnetism?

a)

A measure of density

b)

A force of attraction that causes a magnetic material to move

c)

A type of chemical reaction

d)

A property of all liquids

28.

What is the boiling point?

a)

Temperature at which a solid changes to a liquid

b)

Temperature at which a substance changes from a liquid to a gas

c)

Temperature at which a gas changes to a liquid

d)

Temperature at which a liquid freezes

29.

What is the melting point?

a)

Temperature at which a solid changes to a liquid

b)

Temperature at which a liquid changes to a gas

c)

Temperature at which a liquid freezes

d)

Temperature at which a gas condenses

30.

What is freezing?

a)

Change of state from a liquid to a solid

b)

Change of state from a solid to a liquid

c)

Change of state from a gas to a liquid

d)

Change of state from a liquid to a gas

31.

What is condensation?

a)

Process of a solid to a liquid

b)

Process of a gas to a liquid

c)

Process of a liquid to a gas

d)

Process of a liquid to a solid

32.

When you repaint a wall, what did you change?

a)

Mass

b)

Density

c)

Chemical property

d)

Physical property

33.

Baking a cake is an example of what kind of change?

a)

Physical change

b)

Chemical change

c)

Phase change

d)

Magnetic change

34.

Ripping a piece of paper is an example of what kind of change?

a)

Physical change

b)

Chemical change

c)

Phase change

d)

Electrical change

35.

Which physical property term also means "shiny"?

a)

Hardness

b)

Texture

c)

Luster

d)

Viscosity

36.

What is a metal?

a)

A material that is dull and does not conduct electricity

b)

A material that is shiny and conducts heat and electricity well

c)

A material that is soluble in water

d)

A material that is less dense than air

37.

What is a phase change?

a)

A change in color without altering state

b)

When matter changes state as a result of absorbing or releasing heat

c)

A change in mass due to temperature

d)

A chemical reaction that releases gas

38.

Which term describes material that is not a good conductor of heat or electricity?

a)

nonmetal

b)

metal

c)

metalloid

d)

conductor

39.

Which physical property describes a substance's ability to produce a smell?

a)

odor

b)

color

c)

density

d)

luster

40.

Which property describes substances that can be formed into a wire or thread?

a)

ductility

b)

malleability

c)

brittleness

d)

viscosity

41.

Which property describes the temperature at which a substance melts and becomes a liquid?

a)

melting point

b)

boiling point

c)

freezing point

d)

flash point

42.

Which property describes the ability for one substance to dissolve in another substance?

a)

solubility

b)

density

c)

conductivity

d)

hardness

43.

Which property describes a substance's ability to allow heat, electricity, or sound to pass through it?

a)

conductivity

b)

opacity

c)

porosity

d)

elasticity

44.

Which property describes the ability of a substance to be hammered into sheets without breaking or cracking?

a)

malleability

b)

ductility

c)

brittleness

d)

hardness

45.

Which property describes the way a mineral's surface reflects light (shininess)?

a)

luster

b)

color

c)

streak

d)

hardness

46.

Which is not a sign of a chemical change?

a)

change in size

b)

formation of gas

c)

color change

d)

production of heat

47.

What is the best way to tell if a chemical change has taken place?

a)

The composition changed into a new substance

b)

The state changed from solid to liquid

c)

The size decreased

d)

Only temperature changed without new substances

48.

Which property is the ability of a substance to burn?

a)

flammability

b)

conductivity

c)

density

d)

solubility

49.

Which of the following is NOT a reaction indicator?

a)

cut in half

b)

gas produced

c)

temperature change

d)

color change

50.

Water, which is H2OH_2O , is a what?

a)

element

b)

compound

c)

mixture

d)

solution

51.

Is flammability a physical or chemical property?

a)

physical

b)

chemical

52.

Is soft, powdery texture a physical or chemical property?

a)

physical

b)

chemical

53.

Is the size of an object a physical or chemical property?

a)

physical

b)

chemical

54.

Which type of property changes matter into new matter with new properties?

a)

chemical property

b)

physical property

c)

intensive property

d)

extensive property

55.

Producing bubbles when mixed with vinegar describes which type of property?

a)

chemical property

b)

physical property

56.

All atoms in the same column on the periodic table have the same number of what?

a)

valence electrons

b)

protons

c)

neutrons

d)

total electrons

57.

How many valence electrons are in magnesium?

a)

1

b)

2

c)

3

d)

8

58.

How many electrons can be on the orbit closest to the nucleus?

a)

2

b)

8

c)

10

d)

18

59.

What is the Periodic Table of Elements?

a)

A table that displays all the known elements organized by atomic number

b)

A chart of compounds organized by mass

c)

A list of mixtures organized by state of matter

d)

A timeline of scientific discoveries

60.

What is an atom?

a)

basic unit of matter

b)

negatively charged particle

c)

an element symbol box

d)

smallest unit of energy

61.

How many electrons are there in helium (neutral atom)?

a)

2

b)

4

c)

6

d)

10

62.

How many protons are there in radium?

a)

88

b)

86

c)

90

d)

56

63.

How many electrons are there in titanium (neutral atom)?

a)

22

b)

10

c)

12

d)

26

64.

What is the charge of a neutron?

a)

neutral

b)

positive

c)

negative

d)

variable

65.

What is the charge of a proton?

a)

positive

b)

negative

c)

neutral

d)

zero only in atoms

66.

Based on the image showing an element with the number 2 in the corner, what does the 2 represent?

a)

atomic number

b)

mass number

c)

group number

d)

period number

67.

Based on the image showing an element with atomic number 2, how many protons does this substance have?

a)

2

b)

4

c)

8

d)

16

68.

If an atom has 15 protons and 16 neutrons, what is the atomic number?

a)

15

b)

16

c)

31

d)

1

69.

What is the atomic number of bismuth?

a)

83

b)

209

c)

74

d)

53

70.

What determines how an element reacts?

a)

the number of valence electrons

b)

the total mass

c)

the number of neutrons

d)

the color

71.

What are electron shells?

a)

energy levels where electrons are located

b)

regions that hold protons

c)

cavities that store neutrons

d)

types of chemical bonds

72.

In the periodic table, what are periods?

a)

rows (side to side)

b)

columns (up and down)

c)

blocks grouped by reactivity

d)

families based on similar properties

73.

Based on the provided element image, what is the atomic number for this element?

a)

20

b)

10

c)

2

d)

14

74.

Based on the provided element image, what is the atomic number of this element?

a)

16

b)

26

c)

6

d)

12

75.

How do you identify how many valence electrons an element has based on the periodic table?

a)

group number

b)

period number

c)

atomic mass

d)

density

76.

Look at the provided picture. What does the 14 represent?

a)

atomic number

b)

mass number

c)

group number

d)

number of neutrons

77.

Which particle in the atom is positive?

a)

proton

b)

electron

c)

neutron

d)

nucleus

78.

What is the charge of the electron?

a)

negative

b)

positive

c)

neutral

d)

depends on the element

79.

How many valence electrons does potassium have?

a)

1

b)

2

c)

4

d)

8

80.

How many valence electrons does carbon have?

a)

2

b)

3

c)

4

d)

6

81.

The center of the atom is called the ________.

a)

nucleus

b)

electron cloud

c)

valence shell

d)

isotope

82.

What is the charge on a neutron?

a)

0

b)

-1

c)

+1

d)

-2

83.

What is the charge on an electron?

a)

-1

b)

0

c)

+1

d)

+2

84.

What is the mass number of this atom?

a)

6

b)

7

c)

8

d)

9

85.

A ________ is a pure substance that is made of one type of atom.

a)

element

b)

compound

c)

mixture

d)

solution

86.

The ________ is the number with a decimal in the element box that tells the number of protons and neutrons in the atom.

a)

atomic mass

b)

atomic number

c)

valence number

d)

period

87.

The ________ is the whole number in the element box that tells the number of protons in the atom.

a)

atomic number

b)

atomic mass

c)

group number

d)

symbol count

88.

The ________ is one or two letters that represent an element, with the first letter always uppercase.

a)

element symbol

b)

chemical formula

c)

subscript

d)

isotope code

89.

The ________ is a positively charged particle in the nucleus of an atom.

a)

proton

b)

neutron

c)

electron

d)

ion

90.

________ are found to the left of the staircase on the periodic table.

a)

metals

b)

nonmetals

c)

metalloids

d)

noble gases

91.

________, except hydrogen, are found to the right of the staircase on the periodic table.

a)

nonmetals

b)

metals

c)

metalloids

d)

alkali metals

92.

________ are the horizontal rows on the periodic table.

a)

periods

b)

groups

c)

blocks

d)

families

93.

________ are the vertical columns on the periodic table.

a)

groups

b)

periods

c)

rows

d)

series

94.

What is a valence electron?

a)

an electron in the last shell

b)

an electron in the nucleus

c)

a proton in the outer shell

d)

a shared neutron

95.

________ are 8 elements that are touching the staircase on the periodic table.

a)

metalloids

b)

metals

c)

nonmetals

d)

halogens

96.

What causes a covalent bond?

a)

sharing one or more electrons between two atoms

b)

transfer of electrons from metal to nonmetal

c)

attraction between opposite charges in ions

d)

nuclear fusion of atoms

97.

Covalent bonds are formed between which types of elements?

a)

nonmetals

b)

metals

c)

metalloids

d)

metal and nonmetal

98.

Valence electrons are ________.

a)

the outermost electrons in an atom

b)

the electrons in the nucleus

c)

only electrons in metals

d)

electrons that are always shared

99.

An ionic bond is ________.

a)

a chemical bond between oppositely charged ions (metal bonded to nonmetal)

b)

a bond formed by sharing electrons between nonmetals

c)

a bond inside the nucleus

d)

a bond only between noble gases

100.

A covalent bond is ________.

a)

an attraction formed between atoms when they share electrons

b)

an attraction formed by transferring electrons

c)

a bond only between metals

d)

a bond that always creates ions

101.

Do covalent bonds share electrons?

a)

Yes

b)

No

102.

What is the main difference between an ionic bond and a covalent bond?

a)

Ionic bonds involve electrons being gained or lost; covalent bonds involve electrons being shared

b)

Ionic bonds only occur between nonmetals; covalent bonds only occur between metals

c)

Ionic bonds happen in the nucleus; covalent bonds happen in the electron cloud

d)

Ionic bonds require heat; covalent bonds require pressure

103.

How are covalent bonds formed?

a)

sharing of electrons

b)

transfer of protons

c)

transfer of electrons

d)

sharing of neutrons

104.

Ionic bonds are between which types of elements?

a)

metal and nonmetal

b)

nonmetal and nonmetal

c)

metal and metalloid

d)

metalloid and noble gas

105.

Atoms that gain electrons become ________.

a)

negatively charged

b)

positively charged

c)

neutral

d)

radioactive

106.

Covalent bonds are between which types of elements?

a)

nonmetal and nonmetal

b)

metal and nonmetal

c)

metal and metal

d)

metalloid and metal

107.

How are ionic bonds formed?

a)

transfer of electrons

b)

sharing of electrons

c)

sharing of protons

d)

fusion of nuclei

108.

What happens when an atom loses an electron?

a)

It becomes positively charged

b)

It becomes negatively charged

c)

It remains neutral

d)

It becomes a metalloid

109.

Two or more atoms held together by a chemical bond are called a ________.

a)

molecule

b)

compound

c)

mixture

d)

solution

110.

Imagine you have a 500 gram chocolate bar. You heat the chocolate to its melting point. How many grams will the melted chocolate be?

a)

500 grams

b)

250 grams

c)

0 grams

d)

550 grams

111.

What is a reactant?

a)

A substance on the left side of the arrow that you start with

b)

A substance on the right side of the arrow that is produced

c)

Any molecule with a charge

d)

Only metals in a reaction

112.

Will the total mass of all the molecules on each side of the reaction be the same?

a)

Yes, because mass cannot be created or destroyed; it can change state

b)

No, mass decreases after reactions

c)

Yes, because products always weigh more

d)

No, mass increases during reactions

113.

In the reaction NaCl ---> Na + Cl, what are the products?

a)

Na and Cl

b)

NaCl only

c)

Cl only

d)

Na only

114.

A reactant is ________.

a)

a substance broken apart or combined, located on the left side of the arrow

b)

a substance formed on the right side of the arrow

c)

any element in Group 1

d)

a molecule that cannot change

115.

What is a balanced equation?

a)

When the number of atoms are the same in the products and reactants

b)

When there are equal numbers of molecules only

c)

When mass is greater in the products

d)

When the reaction uses only nonmetals

116.

A molecule is ________.

a)

a group of two or more atoms held together

b)

a single atom

c)

a mixture of compounds

d)

an ion with a charge

117.

How many hydrogens are in water?

a)

2

b)

1

c)

3

d)

4

118.

A chemical reaction is ________.

a)

when atoms form molecules, come apart, and rearrange to form new molecules

b)

when atoms remain unchanged

c)

when mass disappears

d)

when only physical changes occur

119.

The Law of Conservation of Matter states ________.

a)

matter can neither be created nor destroyed but can be changed in form

b)

matter is always created in reactions

c)

mass is lost during melting

d)

atoms can be destroyed in chemical changes

120.

The Law of Conservation of Mass states that matter has which property?

a)

Matter cannot be created or destroyed.

b)

Matter can be created during chemical reactions.

c)

Atoms are lost during chemical changes.

d)

The mass of products is always greater than the mass of reactants.

121.

Which statement best defines a balanced chemical equation?

a)

It has the same number of each kind of atom on the reactant side as on the product side.

b)

It uses more products than reactants.

c)

It shows every molecule’s structure in detail.

d)

It only includes gases.

122.

In a chemical equation, what is the yield sign?

a)

The arrow indicating the reaction produces products.

b)

The plus sign between reactants.

c)

The coefficient written before a formula.

d)

Parentheses showing states of matter.

123.

Based on the Law of Conservation of Matter, what is the relationship between the mass of the reactants and the mass of the products?

a)

The mass of the reactants equals the mass of the products.

b)

Reactants always have greater mass than products.

c)

Products always have greater mass than reactants.

d)

Mass changes unpredictably during reactions.

124.

In a chemical reaction, what is a product?

a)

A new substance formed in the reaction, located on the right side of the arrow.

b)

A substance you start with, on the left side of the arrow.

c)

A catalyst that speeds up the reaction.

d)

Heat released during the reaction.

125.

Why does the pictured chemical equation demonstrate the Law of Conservation of Mass?

a)

The number of atoms of each element are the same on both sides.

b)

Some atoms vanish on the product side.

c)

New elements appear only on the product side.

d)

The product side has fewer types of atoms than the reactant side.

126.

How many of each type of atom are present in 4NO2?

a)

4 nitrogen atoms and 8 oxygen atoms.

b)

8 nitrogen atoms and 4 oxygen atoms.

c)

4 nitrogen atoms and 4 oxygen atoms.

d)

2 nitrogen atoms and 8 oxygen atoms.

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