WorksheetsSemester 1 Exam
Total questions: 101
Worksheet time: 2hrs 41mins
What piece of equipment do you need each time you work with acids, bases, and open flames?
Beaker
Electronic balance
Safety goggles
Buret
beaker
cylinder
funnel
florence flask
The (image) may be used as a beaker cover or evaporating very small amounts of liquids.
glass plate
evaporating dish
mortar
watch glass
What is the name of this piece of glassware laboratory equipment.
erlenmeyer flask
bunsen flask
wide-mouth bottle
florence flask
If glass breaks in the lab you should...
clean it up and put it in the trash can
just leave it and walk away
tell the teacher so they can clean it up
blame it on your friend and laugh at them
The number of significant figures in the measurement 0.000305 kg is
two.
three.
seven.
six.
Written in scientific notation, the measurement 0.000065 cm is
65 x 10-4cm.
6.5 x 10-5cm.
6.5 x 10-6 cm.
6.5 x 10-4 cm.
To determine the number of significant digits in a measurement, follow the rule that
all zeros are significant.
all nonzero digits are significant.
zeros between digits are not significant.
final digits less than 5 are not significant.
The measurement 0.0255 g, rounded off two significant figures, would be
0.02 g.
0.025 g.
0.026 g.
2.5 x 102 g.
What is the product of 100.0 g and 0.010 g expressed in scientific notation and written with the correct number of significant figures?
10001 x 10-2 g
1.0 x 102 g
1.000 x 102 g
1.00 x 102 g
Which of the following is the shortest length?
1m
1 mm
1cm
1km
How many significant figures are in 5.00 ?
1
2
3
4
5
The density of an object is 2.88 g/cm3 . The volume is 5.66 ml. What is the mass of the object?
1.97 g
1.97 ml
16.3 g
16.3 ml
An irregularly shaped object is placed in a graduated cylinder filled with 25 ml of water. The water rises to 34 ml. What is the volume of the solid.
25 ml
34 ml
9 ml
There is no way to tell.
A 35 ml sample of a liquid has a mass of 70 g. What is the density?
2 g/ml
0.5 g/ml
105 g/ml
35 g/ml
Which phrase best describes a compound?
A substance made of two or more elements that are chemically bonded.
A molecule formed by atoms of the same element.
Another word for atom.
Any substance that can be split apart.
Which of these shows SI unit prefixes arranged in order from smallest to largest?
centi, milli, kilo
milli, centi, kilo
kilo, milli, centi
kilo, centi, milli
The SI base unit for mass is the
gram
cubic centimeter
meter
kilogram
Convert 0.5 kg to g.
0.0005
0.005
500
5000
How many centimeters are in a meter?
1000
10
100
1
In division and multiplication, the answer should have the same number of significant figures as the
number in the calculation with the fewest significant figures.
number in the calculation with the most significant figures.
average number of significant figures in the calculation.
total number of significant figures in the calculation.
The dimensions of rectangular solid are measured to be 1.27 cm, 1.3 cm, and 2.5 cm. The volume should be recorded as
4.128 cm3.
4.12 cm3.
4.13 cm3.
4.1 cm3.
Expressed in scientific notation, 0.0930 m is
93 X 10-3 m.
9.3 X 10-3 m.
9.30 X 10-2 m.
9.30 X 10-4 m.
Use the conversion chart in your notes: (1 yard =3 feet)
39 yd = _____ft
13 ft
117 ft
1,131 ft
3.5 ft
The backyard is 27 feet wide. How many yards wide is the backyard?
conversion factor is 1 yard = 3 feet
81 yd
30 yd
24 yd
9 yd
Jimmy jogged for a total of 6.8 miles last week. How many feet did Jimmy jog last week? (1 mile - 5,280 feet)
35,804 feet
35,376 feet
3,590 feet
35,904 feet
A pure substance that cannot be broken down into other substances by chemical or physical means.
compound
molecule
mixture
element
Which one is a chemical property?
flammability
combustibility
ability to rust
all of the above
JJ Thomson was credited for the discovery of the:
Center of the universe
Proton
Electron
Neutron
The first universally accepted theory on atoms was proposed in 1803 by:
Winston Churchill
John Dalton
James Bond
J J Thomson
Which two subatomic particles can be found in the nucleus of an atom?
Ribosomes and endoplasmic reticulum
Neutrons and protons
Electrons and protons
Protons and alpha particles
Rutherford discovered this part of the atom:
Nucleus
Neutron
Proton
Electron
How do you calculate the number of neutrons? *
Mass = Atomic number - Neutrons
Mass - Atomic number = Neutrons
Atomic number = Neutrons
Cr3+ O2-
Ca(CO3)
SnO2
Phosphorous trichloride
How many grams of carbon dioxide are in 0.5 mol of carbon dioxide?
11 g
44.009 g
22.005 g
88.018 g
How many moles of Francium (Fr) are in 7.4 x 1026 atoms?
1.23 moles
44.56 x 1049 moles
87 moles
1.23 x 103 moles Fr
The vertical (up and down) columns in the Periodic Table are called
groups
towers
periods
atomic numbers
Elements in a .................. have similar chemical properties.
period
group
row
Which group of the periodic table is composed of inert (not reactive) gases?
answer choices
alkali metals
alkaline earth metals
halogens
noble gases
Who developed the Periodic Table?
Mendeleev, who was a chemist and teacher
Pavlov, who was a teacher and physchologist
Ladahoff, who was a teacher and biologist
How many moles are in 4.5x1024 Silver atoms?
0.747 particles
0.747 mol
2.71x1047 mol
2.71x1047 particles
