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Worksheets8 Review Topic 1
Total questions: 70
Worksheet time: 40mins
Water, air, buildings, food, and everything visible and invisible has mass and takes up space. What is the word used to describe anything that has mass and takes up space?
atom
molecule
solid
matter
A(n) ____________ is made up of two or more substances that are together in the same place, but each substance keeps its own properties.
mixture
compound
atom
molecule
Choose the three items that describe physical changes.
rusting metal
boiling water
breaking ice
carving a wooden statue
baking a cake
Which term can be used to describe this model?
A molecule because it contains more than one atoms that are held by chemical bonds
An element because it is a unique substance
A compound because it contains more than one type of element that are chemically combined in a set ratio
A mixture because it contain more than one atom that are physically combined
What is the chemical formula for this model?
N3H
NH3
3NH
HN3
Suppose you find a website that describes the rusting of a nail as a change to only the physical properties of iron, would that be accurate?
No, because it is still nail that is made of iron.
Yes, because no new substance was formed.
Yes, because the rust is not a new substance.
No, because a new substance called rust is formed and that is a change in chemical property.
Examples of a homogenous and a heterogenous mixutre are
Homogenous: mix nuts
Heterogenous: mushroom soup
Homogenous: sugar solution
Heterogenous: fruit salad
Homogenous: mixed vegetables
Heterogenous: bread dough
Homogenous: cup of coffee
Heterogenous: fruit juice
Choose the one that is NOT an example of physical properties of matter.
Mass
Volume
Flammability
Density
Choose the one that is NOT an example of chemical properties of matter.
Able to react
Able to burn
Able to melt
Able to rust
What is described in this picture?
Homogenous mixture
Heterogenous mixture
It is both homogenous and heterogenous
None of these
What is described in this picture?
Homogenous mixture
Heterogenous mixture
It is both homogenous and heterogenous
None of these
Is water, H2O, a mixture, element, or compound?
mixture
element
compound
Is Chlorine, Cl, a mixture, element, or compound?
mixture
element
compound
An atom is
a substance that has only one type of atom.
a group of two or more atoms held together by chemical bonds.
basic unit from which all matter is made.
substance made of two or more elements that are chemically combined.
A molecule is
a substance that has only one type of atom.
a group of two or more atoms held together by chemical bonds.
basic unit from which all matter is made.
substance made of two or more elements that are chemically combined.
An element is
a substance that has only one type of atom.
a group of two or more atoms held together by chemical bonds.
basic unit from which all matter is made.
substance made of two or more elements that are chemically combined.
A compound is
a substance that has only one type of atom.
a group of two or more atoms held together by chemical bonds.
basic unit from which all matter is made.
substance made of two or more elements that are chemically combined.
A compound is a substance made of two or more elements. A compound can be:
One type of element (ex: H2 or O2)
More than one type of element (ex: CO2)
neither
A molecule is a group of two or more atoms held together by chemical bonds. A molecule can be
one type of element (ex: H2 or O2).
more than one type of element (ex: CO2).
None of the above
A __________________ is a single type of matter that is pure, meaning it always has a specific makeup or composition.
matter
pure substance
mixture
compound
A chemical property is
something's ability to become something else.
when something is poisonous.
something observed without changing the matter.
A physical property is a characteristic that can be observed without
looking at it.
experimenting with it.
changing the matter into another type of matter.
What kind of matter is this?
Element
Compound
Mixture
What kind of matter is this?
Element
Compound
Mixture
What kind of matter is this?
Element
Compound
Mixture
Water, air, buildings, food, and everything visible and invisible has mass and takes up space. What is the word used to describe anything that has mass and takes up space?
atom
molecule
solid
matter
When atoms combine, the force of attraction that holds them together is a
chemical bond
chemical formula
chemical equation
In order to find the volume of a regular solid, you should multiply the length X width X _______
circumference
height
base
diameter
The density of water is ______ g/cm3.
1.5
.9
1
.5
If an object's mass is 50 g, and its volume is 10 cm3, what is its density?
5 g/cm3
500 g/cm3
60 g/cm3
40 g/cm3
Density is dependent on mass and ___________________.
weight
volume
height
length
Apollo 17 astronauts Eugene Cernan and Harrison Schmitt collected the last samples of moon rocks to bring back to Earth in 1972. The astronauts took measurements of the moon rocks in three categories not affected by gravity. This is because the Earth and moon have different forces of gravity. Which measurement did they not use?
mass
density
weight
volume
Mira is testing objects for her science experiment. She has a chart listing the mystery objects' densities, but no other information. She needs to calculate which object has a mass of 27 grams. If each object has an identical volume of 3 cm³, which object has a mass of 27 grams?
A
B
C
D
Thermal energy flows from
Warmer matter to cooler matter
Cooler matter to warmer matter
Cooler matter to cooler matter
Warmer matter to warmer matter
A physical change
alters the form or appearance of matter but does not turn any substance in the matter into a different substance.
changes the substance in the matter and produces one or more different substances.
creates and destroys matter.
absorbs or releases energy in mater.
Which of the following is a physical change?
Is the action on the video a physical or chemical change?
chemical
physical
both
none of them
What is an endothermic change?
a change which slows down the motion of the particles in the object
a change in which energy is absorbed
a change in which energy is released
a change which releases heat
What's an exothermic change?
It releases energy
It absorbs heat
It speeds up the motion of all the particles in the object
It absorbs energy
What type of change is this?
exothermic change
endothermic and exothermic change
endothermic change
What type of reaction is this?
endothermic change
exothermic change
endothermic and exothermic change
What's the law of conservation of mass
The fact that matter is neither created nor destroyed in any physical or chemical change
The fact that matter can be created and destroyed in any physical or chemical change
The fact that matter can only be created in any physical or chemical change
The fact that matter can only be destroyed in any physical or chemical change
Does this equation follow the law of conservation of mass?
yes
no
A substance that undergoes a physical change is____ after the change.
still the same substance
a different substance
Combustion, electrolysis, oxidation, and tarnishing are examples of__________________.
physical changes
chemical changes
both
none of them
The slow combination of a bright metal with sulfur or another substance, producing a dark coating on the metal is called __________________.
oxidation
combustion
tarnishing
electrolysis
The slow combination of a substance with oxygen is called __________________.
combustion
electrolysis
oxidation
tarnishing
Which of the following is this process an example of?
oxidation
combustion
electrolysis
tarnishing
What is this an example of?
tarnishing
oxidation
combustion
electrolysis
Changes in the state of matter (solids, liquids, gases) are always _________ changes.
chemical
physical
permanent
irreversible
Silver jewelry tarnishing is a __________ change.
physical
chemical
Burning paper is a ____________ change.
physical
chemical
Ripping paper is a _______________ change.
physical
chemical
Grass growing is a ____________ change.
physical
chemical
Jia is preparing to cook a family dinner, and she begins by gathering ingredients for the main course and dessert. She realizes that most ingredients go through both physical and chemical changes as they cook.
One of the ingredients for her main course undergoes physical changes. Which of the following is a physical change?
cooking eggs
grilling hamburger
baking bread
boiling water
A chemical change
alters the form but does not change the original properties of matter.
alters the form and may or may not change the original properties of matter.
alters the form and changes the original properties of matter.
is a change that keeps the original substance the same.
What is the measure of the average energy of random motion of particles?
energy
temperature
thermal energy
endothermic
What is the total energy of all of the particles in an object?
energy
temperature
thermal energy
chemical change
Oxidation is caused by a slow combination with this element.
Sulfur
Hydrogen
Oxygen
Fire
The energy stored in the bonds between atoms is ______.
chemical energy
thermal energy
electrical energy
endothermic energy
