WorksheetsProperties of Matter, Changes in Matter, Conservation of Mass
Total questions: 104
Worksheet time: 8hrs 44mins
2.7 g/cm3
7.14 g/cm3
1.2 g/cm3
8.14 g/cm3
The graph compares the mass of two objects.
Which claim is best supported by the data?
A. Object 2 takes up more space than object 1.
B. Object 1 takes up more space than object 2.
C. Object 1 has more matter than object 2.
D. Object 2 has more matter than object 1.
When heat is added, particles in a solid, liquid, or gas...
Are not affected
Move faster
Move slower
None of the above
Which of the following pairs are the same temperature?
Melting and condensation points
Melting and freezing points
Boiling and freezing points
Boiling and melting points
Ben wants to model how the motion of particles changes with temperature. He considers water in an iron pot. Ben draws a model to show how the water particles and iron particles move at room temperature. Then, he draws a second model to show how the water particles and iron particles move as the pot of water is heated before it boils. How should Ben's second model differ from the first?
the water particles should vibrate faster and the iron particles should not move
both the water particles and iron particles should slide past each other
the water particles should slide past each other faster, and the iron particles should vibrate in place faster
the water particles should move freely in all directions, and the iron particles should slide past each other faster
Use the density chart to identify the substance. If the substance has a volume of 5 cm3 and a mass of 52.5.
lead
aluminum
silver
water
You have a huge, 1,000 gram piece of gold and a 1 gram piece of gold. The density of the larger piece is____
Greater than the density of the smaller piece
Less than than the density of the smaller piece
the same as the density of the smaller piece
There's no way to know
The table shows the densities of several substances. Which of the following would be true if you had 10g of each of the substances?
Each of the samples would have the same density.
The samples would have different sizes.
The sample of glass would float in water.
The sample of zinc would have the greatest volume.
sharpening a pencil
physical change
physical property
chemical change
chemical property
size of an object
physical change
physical property
chemical change
chemical property
inflating a tire
physical change
physical property
chemical change
chemical property
freezing point
physical change
physical property
chemical change
chemical property
This property of matter is the temperature at which a substance will turn into a gas.
melting point
boiling point
solubility
viscosity
This property of matter is how easily a substance will dissolve in a liquid, such as water.
melting point
boiling point
solubility
viscosity
Complete this sentece: "Matter is anything that ...
the amount of matter in an object".
you can smell".
takes up space and has mass".
changes into liquid".
The amount of matter in an object is a measure of the object's ________________.
volume
mass
density
solubility
Rubbing alcohol has a boiling point of 1080 C. What happens to the molecules at this temperature?
They disappear.
They begin to move closer to one another.
They form a rigid, solid structure.
They begin to move independently from each other.
The mass of a rock is measured with a balance. The rock is then broken into many smaller pieces and the total mass of all the pieces is measured again. Which of the following sentences about the mass is TRUE?
The mass of the rock will be greater than the total mass of the smaller pieces.
The mass of the rock will be less than the total mass of the smaller pieces.
The mass of the rock will be same as the total mass of the smaller pieces.
The mass of the rock will not be the same as the total mass of the smaller pieces.
When a liquid turns into a solid, which of the following also changes?
size of molecules
chemical composition
energy
mass
Chemical or Physical:
A characteristic of matter that can be observed with your 5 senses is a ____________ property.
Chemical
Physical
Chemical or Physical:
A characteristic of matter that can only be observed when matter is changed into a new kind of matter.
Chemical
Physical
_______________ are magnetic.
colouring pencils
rubbers
scissors
plastic rulers
True or false: all metals are magnetic.
True
False
9. True or false , the poor ability of non-metals to conduct heat and electricity makes them good insulators
true
false
10. True or false, all metals are solid at room temperature
true
false
Metals are NOT generally good conductors of heat and electricity.
True
False
How will heat flow?
From A to B
From B to A
There is no heat flow.
What will equilibrium temperature be?
28 degrees Celsius
90 degrees Celsius
Between 28 and 90 degrees Celsius
The temperature of a plastic cup is 21 degrees C. It is filled with water that is 4 degrees C. Which of the following describes how heat is transferred?
Heat is transferred from the water to the cup until they are both at 7 degrees C
Heat is transferred from the cup to the water until they are both at 7 degrees C
Heat is transferred from the cup to the water until the cup is 15 degrees C and the water is 10 degrees C
No heat is transferred between the cup and the water
An ice pack is placed on a sprained ankle. Which of the following describes how heat is transferred?
Heat is transferred from the ice pack to the ankle until they reach the same temperature
Heat is transferred from the ankle to the ice pack until they reach the same temperature
Cold is transferred from the ice pack to the ankle until they reach the same temperature
No heat is transferred between the ice pack and the ankle
An apple pie with a temperature of 70 degrees C is taken out of the oven and placed on the kitchen counter to rest. Which of the following describes the flow of heat?
Heat is transferred from the apple pie to the surrounding air until they are both the same temperature
Heat is transferred from the surrounding air to the apple pie until they are both the same temperature
Heat is transferred from the apple pie to the surrounding air until the apple pie is 60 degrees C and the surrounding air is 40 degrees C
No heat is transferred between the cup and the water
You and your father inspect an empty house with the hopes of buying it. You walk through the rooms talking to one another, and you notice that your voices and footsteps are echoing in the big, empty house. What causes the echo?
sound waves reflecting off smooth, hard surfaces throughout the house
sound waves moving around the large rooms
sound waves moving slowly through air
sound waves refracting around corners in the empty rooms
This situation shows that
light travels in a straight line
light is everywhere
light penetrates certain objects
light is produces by the Sun
Which of these provides the best explanation for why the pencil appears broken?
The pencil absorbs the light rays that hit it.
Water reflects light rays away from the pencil.
Light rays are bent by the water in the glass.
The surface of the water reflects the light rays.
Caleb is sitting near the window on a sunny day. When he closes the curtain, the room becomes darker. What property of the curtain allows it to make the room darker?
The curtain absorbs light.
The curtain is brightly colored.
The curtain folds easily.
The curtain is rectangular shape.
Which kind of matter does sound travel through the slowest?
solid
liquid
gas
The Law of Conservation of Mass says that matter can neither be __________ or __________.
created; destroyed
recycled; renewed
subtracted; added
joined; separated
According to the Law of Conservation of Mass, what happens to the wood and oxygen when it is burned?
The wood disappears.
It stays the same chemically.
The atoms in the wood and oxygen rearrange and form smoke and ash.
Nothing.
A substance that is soluble is able to dissolve.
true
false
Cooking an egg is an example of...
A chemical change
A physical change
Melting
Dissolving
Physical Change
If both rocks have the same mass, which statement is true?
Rock A has more volume
Rock B has less volume
Rock A is more dense
Rock B is more dense
Look at the graphs. Which statement is true?
Substance B does not change states.
If thermal energy is continually added, a substance will continually get hotter.
Water has a freezing point of -100 degrees Celcius.
Substance B has a lower boiling point than water.
Look at the graphs. Which statement is true?
At 70 degrees, Water is a liquid and Substance B is a gas.
At 100 degrees, both Water and Substance B are gases.
At 50 degrees, Water is a solid and Substance B is a liquid.
At -50 degrees, Water is a solid and Substance B is melting.
Choose the correct state change descriptions (multiple).
From 1 to 2 is boiling.
From 2 to 3 is condensing.
From 3 to 2 is melting.
From 1 to 3 is freezing.
A reaction was observed between an Alka-Seltzer tablet and the water in each of these cups. Put them in order from SLOWEST reaction speed to FASTEST reaction speed.
A, B, C, D
B, C, A, D
D, A, C, B
D, C, B, A
Are these examples of physical changes, or chemical changes, and why?
They are chemical changes, because objects are changing form.
They are chemical changes, because new compounds are formed.
They are physical changes, because objects are changing form.
They are physical changes, because new compounds are formed.
If there are 30 grams of wood, 2 grams of fire, and 28 grams of ashes, how much smoke was produced?
4 grams
2 grams
It is impossible to measure, since smoke doesn't have mass.
28 grams
After a log is burned, the mass of the resulting ashes is less than the mass of the wood. Why?
Because atoms are destroyed by fire.
Because ashes are less dense than wood.
Because some of the mass of the wood was converted to smoke and lost to the air.
When a log changes to ashes and smoke, some of the mass is lost in the fire.
Which set of properties would be most helpful in identifying unknown substances, and why?
Flammability and reactivity, because not everything has a boiling point.
Density and Melting Point, because these are unique to substances.
Volume and mass, because sometimes you have a bigger sample.
Magnetism and Solubility because everything that's magnetic is soluble in water.
Energy + 6CO2 + 6H2O → 6O2 + C6H12O6
During photosynthesis, sugar C6H12O6 is produced from carbon dioxide, water, and sunlight. Which statement BEST explains what happens during photosynthesis?
Atoms are gained when sugar is formed
Single atoms are converted into molecules
Atoms from compounds are lost when sugar is formed
Atoms of compounds are rearranged to form new compounds
The graph shows that the rate of reaction and temperature are _______ related and that the rate ________ as the temperature increases.
not, increases
directly, increases
proportionally, decreases
indirectly, stays the same
Mrs. Smith is demonstrating a chemical change for her class. She places 15 grams of baking soda into a beaker. Next she adds 15 grams of vinegar to the same beaker. When the two compounds make contact, they bubble and fizz a great deal. She places the beaker on the balance and notes that the mass of the solution in the beaker is less than the expected 30 grams.
Why is the mass of the solution in the beaker less than 30 grams?
The balance was not working correctly.
The gas that was released changed the mass.
Mass is always lost in a chemical reaction
The new products have less mass than the original reactants.
Why does an increase in temperature result in an increase in reaction rate?
An increase in temperature raises the activation energy which increases the reaction rate.
An increase in temperature causes the molecules to increase in size which increases reaction rate
An increase in temperature decreases the concentration of reactants which increases reaction rate.
An increase in temperature causes an increases the number of collisions which increases reaction rates.
In an experiment, determining how the temperature of water affects the dissolving rate of Alka-Seltzer, what is the temperature of water?
controlled variable
dependent variable
independent variable
In an experiment, determining how the temperature of water affects the dissolving rate of Alka-Seltzer, what is the dissolving rate of water?
controlled variable
dependent variable
independent variable
In an experiment, determining how the temperature of water affects the dissolving rate of Alka-Seltzer, what is the same amount of water?
controlled variable
dependent variable
independent variable
Solubility is a ________________________ property.
physical
chemical
Fish breathe oxygen, which is dissolved in water. Is the oxygen the fish breathe considered to be the solute or solvent?
Solute
Solvent
You make a pitcher of lemonade by adding lemon juice, sugar, ice and water. Which of the following are the 2 solutes in the solution?
Lemon juice
Sugar
Water
Lemon seeds
Solutes dissolve quicker in _________ water.
cold
warm
If I dissolve carbon dioxide in water, what is the solvent?
Carbon Dioxide
There is no solvent
Oxygen
Water
