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WorksheetsChemistry of matter
Total questions: 64
Worksheet time: 32mins
The graph below shows the solubility of two different chemical compounds. Compared to copper sulfate, approximately how many more grams of potassium bromide would dissolve at 90°C?
20
40
60
80
1.
Based
on the information in the table, which of the four substances below is a
compound?
Se
Fe
CO
He
Which term is not a form of matter?
element
compound
energy
atom
Water vapor changes to liquid water during which process?
condensation
evaporation
vaporization
melting
Atoms are made of particles. These include:
protons only
protons and electrons only
protons and neutrons only
protons, neutrons, and electrons
Which of the following is true?
proton, neutral
electron, negative
neutron, negative
electron, positive
Which of the following describes an atom which is neutral?
5 protons, 12 neutrons, and 12 electrons
8 protons, 9 neutrons, and 8 electrons
7 protons, 7 neutrons, and 8 electrons
11 protons, 12 neutrons, and 6 electrons
Elements are arranged on the Periodic Table according to
density
phase of matter
number of protons
abundance on Earth
Which set of terms describes a non-metal?
shiny, malleable, good conductor
dull, brittle, poor conductor
dull, malleable, poor conductor
shiny, brittle, poor conductor
Which group of elements will not react with other elements?
metals
metalloids
non-metals
noble gases
Which term describes a chemical characteristic of matter?
temperature
density
reactivity
mass
Which activity best demonstrates that air takes up space?
blowing out a candle
flying a kite
seeing your breath on a cold day
inflating a balloon
The particles that make up a solid
can move easily
are closely packed together
can flow against each other
are spread far apart
A phase change occurs because
heat energy is absorbed or released
elements in the compound are re-arranged
two different compounds react
elements are physically combined
The cooling of air will cause water vapor in the air to change to liquid rain drops. This change is called
vaporization
evaporation
condensation
sublimation
Particles of a gas will do all of the following except
become arranged in a regular geometric pattern
spread out to fill the entire container
take on the shape of the container they are in
constantly change position
The following equation, H2O (L) + heat → H2O (g), describes a
physical change
mixture
chemical change
solution
The following equation, N2 + 3 H2 → 2 NH3 describes a
physical change
mixture
chemical change
element
Which describes a physical change followed by a chemical change?
cutting wood then painting it green
taking ice cream out of the freezer then letting it melt
putting gasoline in the car then starting the engine
crushing a sugar cube then dissolving it in water
A sample of unknown composition was tested in a laboratory. The sample could not be broken down by physical or chemical means into simpler substances. On the basis of this research, the laboratory reported that this sample was most likely a(n):
compound
element
mixture
solution
The compound calcium carbonate, commonly known as chalk, has the chemical formula of CaCO3. How many different elements are in chalk?
one
two
three
five
In the formula for glucose, C6H1206, how many atoms of hydrogen are indicated?
one
six
twelve
twenty-four
Which of the following will cause a lump of sugar to dissolve faster?
chopping it into pieces
adding more sugar
stop stirring the water
adding cold water
Which model is used by scientists to determine the properties of elements?
a Punnett square
the Periodic Table
a pedigree chart
the rock cycle
Hydrochloric acid is added to a beaker containing a piece of zinc. As a result, zinc chloride is formed and hydrogen gas is released. This is an example of
a chemical reaction
a physical change
photosynthesis
evaporation
Which of these substances are elements?
hydrochloric acid and carbonic acid
carbon dioxide and water
oxygen and helium
water and oxygen
A mixture of salt, sand, and water is thoroughly stirred. It is then filtered through a filter paper as shown in the diagram below. Which substance(s) pass through the filter?
salt and sand
sand and water
water and salt
water only
Which of the following processes can separate dissolved salt from water?
filtration
evaporation
stirring
sedimentation
Which combination of zinc and hydrochloric acid would react the fastest?
a zinc strip and hydrochloric acid at 20 0C
zinc powder and hydrochloric acid at 20 0C
a zinc strip and hydrochloric acid at 10 0C
zinc powder and hydrochloric acid at 10 0C
The elements fluorine, chlorine, bromine, and iodine are all found in the same group (17) on the table. These elements are grouped together because they
are metals
have the same atomic mass
react in similar ways
are noble gases
Water (H2O) is not found on the Periodic Table of the Elements because water is
an atom
a mixture
a liquid
a compound
A student writes the following observations about aluminum in his notebook: It is shiny and reflects light. It conducts electricity and heat. It will bend. It will not rust. It will melt at 661 degrees C. Which is are chemical physical properties only
It is shiny and reflects light.
It conducts electricity and heat.
It will bend.
It will not rust.
It will melt at 661 degrees C
A student mistakenly dumped iron filings and sand into a beaker of salt that the teacher needed for a salt water fish tank. Check all that needs to be done to separate all the substances back to original.
use a magnet to separate iron filings
evaporate the water to separate the water from the salt
filter salt from water using a coffee filter
filter the salt water from the sand using a coffee filter
add water to make a solution of salt water and sand mixture
Figure A shows a beaker containing water, sand, and salt. The salt is totally dissolved in the water. Figure B shows the contents of the beaker being poured through filter paper in a funnel over a flask. Figure C shows the same flask after sitting at room temperature for 15 days. After 15 days, the flask contains only solid salt particles. the soluble substance is
sand
salt
Figure A shows a beaker containing water, sand, and salt. The salt is totally dissolved in the water. Figure B shows the contents of the beaker being poured through filter paper in a funnel over a flask. Figure C shows the same flask after sitting at room temperature for 15 days. After 15 days, the flask contains only solid salt particles. the insoluble substance is
sand
salt
Figure A shows a beaker containing water, sand, and salt. The salt is totally dissolved in the water. Figure B shows the contents of the beaker being poured through filter paper in a funnel over a flask. Figure C shows the same flask after sitting at room temperature for 15 days. After 15 days, the flask contains only solid salt particles. A solution can form with the mixture of
sand,salt and water
salt and water
water only
sand and salt
sand and water
Figure A shows a beaker containing water, sand, and salt. The salt is totally dissolved in the water. Figure B shows the contents of the beaker being poured through filter paper in a funnel over a flask. Figure C shows the same flask after sitting at room temperature for 15 days. After 15 days, the flask contains only solid salt particles. Why are the contents of the flask in figure B are classified as a mixture.
because it is the physical combination of two or more substances. Can be separated by filtration and settling.
because it is the chemical combination of two or more elements. Cannot be physical separated.
Two friends are melting chocolate to make fudge. They do not have much time and want the chocolate to melt faster. Suggest TWO ways they can get the chocolate to melt faster.
heat it more by putting it into direct sunlight
crush it into smaller pieces
shade it
make it colder
One example of a physical change is
burning paper.
baking cookies
the rusting of iron
breaking your pencil when you are mad
One example of a chemical change is
cutting up paper.
burning gasoline in an engine.
boiling water.
crushing a can.
Which of the following is an example of a chemical property?
hardness
color
melting point
reactivity
Which process changes matter into one or more new substances?
physical change
chemical change
conservation
freezing
Water vapor in the air turns to liquid water in the form of rain. This is an example of a
physical change.
chemical change.
chemical equation.
chemical formula.
What happens when chemical bonds break and new bonds form?
a physical change
a chemical reaction
matter is destroyed
surface area increases
The only sure evidence of a chemical reaction is
the formation of a gas
a color change
the production of new materials
changes in properties.
Three examples of physical change are ____.
boiling of water, bursting of a balloon, and crumpling a piece of paper
burning of gasoline, rotting of an egg, and exploding fireworks
freezing of water, evaporation of gasoline, and rusting a nail
sawing of wood, crushing a can, and toasting a marshmallow
The shape of an apple is a ____.
chemical property
physical property
When a log burns in a fire, ____.
a physical change has occurred
mass is gained
mass is lost
new substances are formed
What is the total number of atoms in the compound BaCO3?
2
3
4
5
Which term describes a chemical property?
BRB
Mass
density
reactivity
Which of the following is a chemical property?
It is shiny and reflects light.
It conducts electricity and heat.
It will rust.
It will melt at 661 ºC.
Which change would be the most difficult to reverse?
melting an ice cube, because it is a physical change
dissolving sugar in water, because it is a chemical change
burning a match, because it is a chemical change
rusting an iron nail, because it is a physical change
An unknown element has the following properties. Which of them is a chemical property?
reacts with oxygen
density of 0.97 g/cm3
solid at room temperature
A piece of aluminum will bend. This is an example of
a chemical property
an element
a physical property
Which of the following represents an element and not a compound?
H2O
Na
CH4
C6H12O6
What does the bar connecting the two spheres represent?
chemical bond
atom
element
water
What does each sphere represent?
different elements
compounds
chemical bonds
The larger sphere represents
oxygen
nitrogen
hydrogen
carbon
The smaller sphere represents
oxygen
nitrogen
hydrogen
carbon
In which state of matter are particles packed tightly together in fixed positions?
solid
liquid
gas
In which state of matter do the particles spread apart and fill all the space available to them?
solid
liquid
gas
In which state of matter do the particles spread apart and fill all the space available to them?
solid
liquid
gas
Elements that are metals are
C
Cu
Ag
Zn
P
Which elements will react the most similar?
C
F
O
Cl
Ar
