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Duplicate of Chemistry I Unit 1 Intro to Chemistry Study Guide 0817 Flashcards | StudBud
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Duplicate of Chemistry I Unit 1 Intro to Chemistry Study Guide 0817
Duplicate of Chemistry I Unit 1 Intro to Chemistry Study Guide 0817
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1
What is the control in this experiment
Sample 2
Sample 1
Sample 3
Sample 4
2
Which term is described as the amount of matter in an object?
Mass
Volume
Density
Length
3
When an iron nail is ground into powder, its mass
cannot be determined
increases
stays the same
decreases
4
Which precaution should you take when you see this symbol?
Contents are radioactive
Wear Protective clothing
Do not touch broken glass
Wear heat-resistant gloves
5
An object has a mass of 26.94 grams and a volume of 2.568 cubic centimeters. What is the material likely to be made of.
Silver
Copper
Iron
Gold
6
Which term describes the amount of mass contained per unit volume?
mass
density
temperature
length
7
Which is a chemical property of copper?
has the symbol Cu
is a solid at room temperature
has a boiling point of 2567º
reacts in air to form a green layer
8
Which state of matter takes both the shape and volume of its container?
liquid
both gas and liquid
solid
gas
9
A theory is
procedure used to test a proposed explanation
Proposed explanation for an observation
well-tested explanation for a broad set of observations
summary of the results of many observations
10
What is the independent variable in this experiment
volume of water
boiling temperature
time required for water to boil
Amount of salt added
11
Which of the following is a homogeneous mixture?
soil
sand and water
beef stew
salt water
12
What is the density of an object having a mass of 8.0 g and a volume of 25 cm
3
?
3.1 g/cm3
0.32 g/cm3
200 g/cm3
2.0 g/cm3
13
Separating a solid from a liquid by evaporating the liquid is called
condensation
distillation
filtration
solution
14
Which precaution should you take when you see this symbol?
wear goggles if you are doing the experiment
Do not look directly at the experiment
wear goggles if you are performing or observing the experiment
watch the teacher carefully and follow what he or she does
15
A chemical composition of two or more different elements joined together in fixed proportions is known as a(n)
homogenous mixture
element
heterogeneous
compound
16
Which of the following is true about homogeneous mixtures?
They consist of two or more phases
They have compositions that never vary
They are always liquids
They are known as solutions
17
What happens to matter during a chemical reaction?
some matter is created
Matter is neither created nor destroyed
some matter is destroyed
Some matter is destroyed and some is created.
18
The chemical symbol for iron is
FE
Fe
fe
Ir
19
The closeness of a measurement to its true value is a measure of its
reproducibility
accuracy
usefulness
precision
20
Which value has only 4 significant digits
8450
6.930
0.392
0.0450
21
What is the metric system prefix for the quantity 0.000001
micro-
deci-
centi-
kilo-
22
Which is a reasonable hypothesis for this experiment
If salt is added to water, the water will get cloudy
If water is boiling, it must have salt added to it
Salt makes water boil
If salt is added to water, the water will boil at a higher temperature
23
What is the volume of 45.6 g silver if the density of silver is 10.5 g/mL
none of the above
479 mL
0.23 mL
4.34 mL
24
Density is found by dividing
volume by mass
area by mass
mass by volume
mass by area
25
Which of the following substances is an element?
Sugar
Baking soda
Salt
Iron
26
Which is a value that should remain constant for all samples in this experiment?
boiling temperature
volume of water
Time required for water to boil
amount of salt added
27
A substance that can be separated into two or more substances only by a chemical change is a(n)
compound
Solution
element
mixture
28
When sucrose is heated and decomposes to form carbon dioxide and water, which of the following is a reactant
carbon dioxide
Sucrose
water
heat
29
Which is the correct value for the prefix deci-
one-thousandth
ten
one-tenth
hundred
30
The chief advantage of the metric system over other systems of measurement is that it
has more units
is in french
is in multiples of 10
is derived from nature itself
31
Which of the following was a major contribution to chemistry by Antoine Lavoisier?
Encouraged scientists to form explanations based on philosophical arguments
He showed that oxygen is required for material to burn
He developed the science of alchemy
He demonstrated the presence of phlogiston in air
32
A chemical change occurs when a piece of wood...
is painted
decays
is cut
is split
33
Which of the following are considered physical properties of a substance?
all of the above
melting and boiling points
color and odor
malleability and hardness
34
Which field of science studies the composition and structure of matter?
Geology
Biology
Physics
Chemistry
35
Which is the correct measurement for location marked by the arrow
51
51.8
52
50.2
36
When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place?
a physical change
a chemical change
neither a physical change nor a chemical change
both a physical change and chemical change
37
A vapor is which state of matter
liquid
gas
solid
all the above
38
Which state of matter has a definite volume and takes the shape of its container?
Liquid
gas
solid
both liquid and gas
39
Which of the following represents a compound?
O-16
H2O
H
H-3
40
What is the SI unit of mass
liter
kilogram
candela
joule
41
What is the dependent variable in this experiment
volume of water
time required to boil
Amount of salt added
boiling temperature
42
The study of chemicals that, in general, do not contain carbon is traditionally called what type of chemistry?
Bio
Physical
Analytical
Inorganic
