WorksheetsQUIZ #1: CHEM 14 BSECE 1-1
Total questions: 40
Worksheet time: 42mins
_____________ is the study of matter and how matter changes.
Chemistry
Paleontology
What is the basic particle that makes up an element?
Atom
Cell
What science resource lists all the elements?
Periodic Table
Microscope Guide
Can elements be broken down into anything simpler?
Yes
No
A scientist is working in the lab, with compounds containing carbon. She is most likely working in the field of
Organic
Analytical
Biochemistry
Physical
The smallest unit of matter that retains the properties of that matter is
a molecule
a mixture
a compound
an atom
Which statement best describes an element?
any combination of two or more atoms of different typesa
a substance containing only carbon atoms
a pure substance made up of only one kind of atom
any kind of crystal
Which of the following changes is a physical change of matter?
water evaporating
a nail rusting
paper burning
a silver spoon tarnishing
Which of the following changes is a chemical change of matter?
ice melting to produce water
water boiling to produce water vapor
vinegar combining with baking soda to produce carbon dioxide
liquid silica solidifying to form glass
Which of the following is an example of a heterogeneous mixture?
tap water
orange-colored sugar water
chunky peanut butter
gold ring
Which of the following is a pure substance?
water
air
granite
stainless steel
Which of these recorded observations is qualitative, rather than quantitative?
A chemical reaction is complete in 2.3 s.
The compound melts at 87.5C.
The solid has a mass of 23.4 g.
Iron is denser than aluminum.
Which of these statements is true of the scientific method?
The steps may vary somewhat to suit the experiment.
Scientists must follow its steps exactly.
Working scientists rarely use it.
Scientists rarely publish results of experiments.
Theories are considered successful only if they
can be used to make accurate predictions.
can be used to make accurate predictions.
can be stated in simple terms.
have been accepted by all scientists.
HIDE ANSWER
The SI base units for time and temperature are
hour and degree Celsius
hour and kelvin.
second and degree Celsius.
second and kelvin.
Which of these shows SI unit prefixes arranged in order from smallest to largest?
centi, milli, kilo
kilo, milli, centi
milli, centi, kilo
kilo, centi, milli
The SI base unit for mass is the
gram
meter
cubic centimeter
kilogram
The number of significant figures in the measurement 170.04 km is
Three
Five
Four
Six
Expressed in scientific notation, 0.0930 m is
93 X 10-3 m
9.30 X 10-2 m.
9.3 X 10-3 m.
9.30 X 10-4 m.
A pure substance that cannot be separated into simpler substances by chemical or physical means.
Element
Mixture
Compound
Chemical
A compound is made of ________ atoms.
big
different
similar
Carbon Dioxide is a ______
compound
mixtures
element
Battle of Bunker Hill
Which of the following represents an element?
H2O
NaCl
H2
CaCO3
Salt water boils and the water completely evaporates, salt (NaCl) is left in the bottom of the beaker. Which of the following is left in the beaker?
Compound
Mixture
Element
None of the Above
Iced Tea (with ice in it)
Element
Heterogenous Mixture
Compound
Solution
Pizza
Element
Heterogenous Mixture
Compound
Solution
Salt water
Element
Heterogeneous Mixture
Compound
Solution
Milk is a
solution
colloid
suspension
When elements form mixtures, the elements keep their original properties.
True
False
Which of the following is correct scientific notation?
20.35 x 104
2035 4
.2035 x 104
2.035 x104
How many significant figures: 216 m
(a)
How many significant figures: 2016 m
(a)
How many significant figures: 153.0 mL
(a)
How many significant figures: 0.012 km
(a)
How many significant figures: 1000 mL
(a)
How many significant figures: 100.000 cL
(a)
How many significant figures: 0.001 g
(a)
How many significant figures: 4.20 cm
(a)
How many significant figures: 0.010 L
(a)
How many significant figures: 450 m
(a)
