Science Grade 6 Unit 04: Compounds 2013­2014
Some questions (c) 2013 by TEKS Resource System.
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Use the following Venn diagram for the next two questions.
I. Made from just one element
II. Made from more than one element
III. Formed through a chemical reaction
IV. Found on periodic table
V. Essential for life
VI. Found on Earth
1
Which of the following would be found
only in the Compound side of the Venn
diagram?
A II, III
B III, IV
C
I, VI
D IV, V
2 Which of the following would be found
only in the Element side of the Venn
diagram?
F
V, VI
G
I, V
3
Water has the chemical formula H2O.
Which statement correctly states the
number of hydrogen and oxygen atoms
present in the chemical formula for
water?
A There is an equal number of
hydrogen and oxygen.
B There is one hydrogen atom for
every two oxygen atoms.
C
There are two hydrogen atoms for
every one oxygen atom.
D There are two hydrogen atoms for
every four oxygen atoms.
H II, IV
J
I, IV
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4 Glucose is a sugar that humans need to
survive. It forms as a result of plants
undergoing photosynthesis. The
chemical formula for glucose is
C6H12O6.
How many different elements are in
glucose?
F
24
G
6
7
A new compound has just been made.
Its formula is:
COFeHNCoBNa
How many different elements make up
this compound?
A 9
B 10
C
8
D 11
H 3
J
5
2
What do the letters Na and Cl stand for
in the chemical formula NaCl?
A mixtures
B compounds
C
elements
8 Marie had a beaker with a small amount
of baking soda. She added a few drops of
pickle juice to the baking soda and
observed fizzing and bubbling. Based on
her observation, which of these can
Marie determine about the new
substance formed by mixing the baking
soda and pickle juice?
F
A chemical reaction produced a
solid.
G
No chemical reaction took place.
D molecules
6 Which of the following is a compound?
F
Co
G
Fe
H Only a physical change happened.
J
A chemical reaction produced a gas.
H H
J
CO
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9 During a science class experiment, a
teacher places a small amount of sugar
in a spoon and heats it over a candle.
Which of the following would be the
BEST evidence that a change in the
chemical properties of the sugar has
taken place?
A The sugar gets hotter.
B The sugar gets larger.
C
The sugar turns into a liquid.
D The sugar turns black.
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10
A
B
silver spoon tarnishes
ice melting
leaves changing
colors
in the fall
water separating into
hydrogen and oxygen
C
D
dry ice goes from a mixing flour, salt, and
solid to a gas form of sugar
CO2
sugar cube dissolving
your breath
in water
condensing on a cold
window pane
paper tearing
glass breaking
sanding wood
grinding something
into
a powder
Which column includes only chemical changes?
F
A
G
B
H C
J
11
D
Two liquids are mixed together. Which
of the following does NOT identify the
formation of a new substance being
formed?
12
A A gas is produced.
B One liquid disappears into the
other.
C
Sodium is a silver, solid metal, and
chlorine is a yellow gas. Both are
elements and can be found on the
periodic table. When they are mixed
together, they give off a lot of heat, and
a new white substance is formed.
What is occurring?
The temperature changes.
D A solid is formed.
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13
If you conducted the experiment
in thr previous question, how
would you dispose of the
materials when you were finished
with the experiment?
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14
The chemical formula for glucose is
C6H12O6, and the formula for ethanol
is C2H5 OH. Glucose is the product of
photosynthesis and is a simple sugar.
Ethanol is a liquid used in medicines,
flavoring, and fuel for internal
combustion vehicles.
Describe the similarities and
differences between these two
compounds.
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Use the following information to answer the next three questions.
Ali was given two materials, a liquid and a solid, which when mixed together produced a gas.
She was asked to design an experiment to test how much gas was produced when the two
materials were combined.
15
Ali designed an experiment to measure
the amount of gas produced during the
chemical reaction. The steps of the
experiment are listed in the box, but
are not in the correct order.
16
3 Place balloon over the neck
of the bottle.
F
graduated cylinder, spring scale
G
graduated cylinder, triple beam
balance
H beaker, spring scale
1 Tie off the filled balloon and
find the mass of the
balloon.
2 Measure 100 mL of the
liquid.
What reusable measurement
equipment does Ali need to conduct
her investigation?
J
17
paper cup, triple beam balance
What safety equipment is most
important for Ali to use when
conducting her investigation?
4 Add 10g of the solid to the
bottle.
A latex gloves
5 Pour the liquid into the
bottle.
C
6 Find the mass of the empty
balloon.
B beaker tongs
safety goggles
D fire extinguisher
What is the correct order of the lab
procedure?
A 6, 1, 4, 3, 2, 5
B 6, 5, 2, 3, 4, 1
C
6, 4, 2, 3, 1, 5
D 6, 2, 5, 4, 3, 1
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Use the information below to answer the next three questions.
Ali was given two materials, a liquid and a solid, which when mixed together produced a gas.
She entered her data into the data table below.
Amount of Amount of Amount of
liquid (ml) solid (g)
gas (g)
18
50
10
0.6
100
20
1.2
150
30
X
200
40
2.4
Ali forgot to record the mass of the
balloon on her third trial. By analyzing
her data, what amount is the MOST
reasonable mass?
F
3.0 g
G
2.4 g
H 2.0 g
J
19
1.8 g
Based on Ali’s data, if she wanted to fill
a balloon so it would have 4.8 g of gas,
how much liquid and solid will she need
to use?
A 250 mL liquid, 50 g solid
B 400 mL liquid, 80 g solid
C
300 mL liquid, 60 g solid
D 350 mL liquid, 70 g solid
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20
Based on Ali’s data table, what graph
MOST accurately represents how the
amount of the two original materials
affects the amount of gas given off?
F
G
H
J
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