NEW
Font size
S
M
L
XL
Worksheetsmatter and chemical change
Total questions: 58
Worksheet time: 38mins
Name
Class
Date
1.
Flammable materials, like alcohol, should never be dispensed or used near
a)
an open door
b)
an open flame
c)
another student
d)
a sink
2.
If a laboratory fire erupts, immediately
a)
notify your instructor
b)
run for the fire extinguisher
c)
throw water on the fire
d)
open the windows
3.
Approved eye protection devices (such as goggles) are worn in the laboratory
a)
to avoid eye strain
b)
to improve your vision
c)
only if you don’t have corrective glasses
d)
any time chemicals, heat or glassware are used
4.
If you wear contact lenses in the school laboratory
a)
take them out before starting the lab
b)
you do not have to wear protective goggles
c)
advise your science instructor that you wear contact lenses
d)
keep the information to yourself
5.
You are heating a substance in a test tube. Always point the open end of the tube
a)
away from all people
b)
toward another classmate
c)
toward your lab partner
d)
toward yourself
6.
You are heating a piece of glass and now want to pick it up. You should
a)
pour cold water on it
b)
use tongs
c)
pick up the end that looks cooler
d)
use a rag or paper towels
7.
You have been injured in the laboratory (cut, burn, etc.). First you should
a)
apply first aid yourself
b)
tell the science instructor at once
c)
see a doctor after school
d)
visit the school nurse after class
8.
When gathering glassware and equipment for an experiment, you should
a)
All of the choices
b)
clean any glassware that appears dirty
c)
examine all glassware to check for chips or cracks
d)
read all directions carefully to know what equipment is necessary
9.
Personal eyeglasses provide as much protection as
a)
none of these answers
b)
splashproof chemical goggles
c)
safety glasses
d)
a face shield
10.
Long hair in the laboratory must be
a)
tied back or kept entirely out of the way with a hair band, hairpins, or other confining device
b)
always neatly groomed
c)
held away from the experiment with one hand
d)
cut short
11.
In a laboratory, the following should not be worn.
a)
all of the answers
b)
dangling jewelry
c)
sandals
d)
loose clothing
12.
The following footwear is best in the laboratory.
a)
shoes appropriate for the weather
b)
open-toed shoes
c)
closed-toed shoes
d)
sandals
13.
Hot glass looks the same as cold glass.
a)
True
b)
False
14.
When you finish working with chemicals, biological specimens, and other lab substances, always
a)
wipe your hands on your clothes
b)
wipe your hands on a towel
c)
wash your hands thoroughly with soap and water
d)
treat your hands with skin lotion
15.
Carbon
a)
Ca
b)
Cb
c)
C
d)
Cr
16.
Hydrogen
a)
Hy
b)
H
c)
Ho
d)
h
17.
Sodium
a)
na
b)
S
c)
So
d)
Na
18.
Aluminum
a)
Al
b)
A
c)
Au
d)
AL
19.
Chlorine
a)
Ch
b)
CL
c)
Cl
d)
Co
20.
Name the following:
Na2O
Na2O
a)
Sodium Oxide
b)
Sodixide Oxide
c)
Sodium Oxygen
d)
Disodium oxide
21.
Name the following:
MgF2
MgF2
a)
Magnesium Flouride
b)
Magnesium Flourine
c)
Magnamide Flourine
d)
Magnamide Fluroide
22.
Name the following:
Mg3P2
Mg3P2
a)
Magnesium Phosphide
b)
Magnesium Phosphorus
c)
Magnamide Phosphide
d)
Magnamide Phosphorus
23.
What is ionic formula:
Barium Chloride
Barium Chloride
a)
BaCl2
b)
BaCl
c)
Ba2Cl
d)
BaCl3
24.
What is ionic formula:
Aluminum Iodide
Aluminum Iodide
a)
AlI3
b)
AlI
c)
Al3I
d)
not an answer:
shorter one is the capital 'i' for iodine
shorter one is the capital 'i' for iodine
25.
What is ionic formula:
Calcium Sulfide
Calcium Sulfide
a)
CaS
b)
Ca2S
c)
CaS2
d)
Ca2S2
26.
What is ionic formula:
Lithium Nitride
Lithium Nitride
a)
Li3N
b)
LiN
c)
LiN3
d)
Li2N3
27.
Which element has more than one possible cation?
a)
Na
b)
Fe
c)
O
d)
F
28.
CO2
a)
Carbon Monoxide
b)
Monocarbon Dioxide
c)
Carbon Dioxide
d)
Carbon Dioxygen
29.
C2H6
a)
Dicarbon hexahydride
b)
Carbon hexahydride
c)
Carbon heptahydride
d)
Dicarbon heptahydride
30.
N2
a)
Dinitrogen
b)
Nitrogen
c)
Nitride
d)
Nickel
31.
SF6
a)
Monosulfur Hexaflourine
b)
Sulfur Hexafluorine
c)
Sulfur Hexaflouride
d)
Monosulfur Hexaflouride
32.
P2O5
a)
Diphosphorus Pentoxide
b)
Phosphorus Oxide
c)
Dipotassium Pentoxide
d)
Phosphorus Pentoxygen
33.
H2O
a)
dihyrogen dioxide
b)
dihydride oxygen
c)
dihydrogen monoxide
d)
hydrogen monoxide
34.
C2H2
a)
Carbon Hydrogen
b)
Dicarbon dihydride
c)
Dicarbon dihydrogen
d)
Carbon Trihydride
35.
SbF5
a)
Antimony Pentafluoride
b)
Tin Flouride
c)
Tin Pentafluoride
d)
Monoantimony Pentaflouride
36.
What shape does H2O have?
a)
Linear
b)
Bent
c)
Tetrahedral
d)
Trigonal Pyramidal
37.
What shape does BH3 have?
a)
Linear
b)
Tetrahedral
c)
Trigonal Planer
d)
Trigonal Pyramidal
38.
What shape does NH3 have?
a)
Linear
b)
Tetrahedral
c)
Trigonal Pyramidal
d)
Trigonal Planar
39.
What shape does CO2 have?
a)
Linear
b)
Bent
c)
Tetrahedral
d)
Trigonal Planar
40.
What shape does H2 have?
a)
Linear
b)
Bent
c)
Tetrahedral
d)
Octahedral
41.
What shape does CH2Br2 have?
a)
Tetrahedral
b)
Trigonal Planar
c)
Bent
d)
Trigonal Pyramidal
42.
What shape does PF3 have?
a)
Tetrahedral
b)
Trigonal Pyramidal
c)
Trigonal Planar
d)
Bent
43.
A system can be defined as
a)
A collection of parts that work together to complete a purpose
b)
A system
c)
A piece of a whole
d)
A group that individually does work
44.
What types of systems are there?
a)
Mechanical and Electrical Systems
b)
Inside and Outside Systems
c)
Open and Closed Systems
d)
Human and Machine Systems
45.
What steps or process is required in order for a system to work
a)
Engineering and Design Process
b)
Stairs
c)
Construction Process
d)
Input, Process, Output, Feedback
46.
Closed systems do or do not need human intervention
a)
Does
b)
Does not
47.
Which is Chemical Equation is Balanced?
a)
CH₄+O₂------CO₂+2H₂O
b)
H₂+O₂-----2H₂O₄
c)
4Al+3O₂-----2Al₂O₃
48.
B₂ + 3W₂ => 2BW₃
a)
Balanced
b)
Unbalanced
49.
Which are chemical changes
a)
Iron rusting
b)
Glass breaking
c)
Clothing ripping
d)
Hair cut
51.
What is the law of conservation of mass?
a)
The part of the universe being studied
b)
The rest of the universe that interacts with the system
c)
Within a closed system, mass does not change
d)
A system that freely exchanges matter and energy
51.
What is the law of conservation of mass?
a)
The part of the universe being studied
b)
The rest of the universe that interacts with the system
c)
Within a closed system, mass does not change
d)
A system that freely exchanges matter and energy
52.
A system that only exchanges energy with its surroundings; mass is conserved.
a)
Open System
b)
Closed System
53.
Can matter be created or destroyed?
a)
Yes, it can be created.
b)
Yes, it can be destroyed.
c)
No, matter is always conserved
d)
None of these
54.
The mass after a physical change, such as ice melting into water, stays the same
a)
True
b)
False
55.
The total amount of matter (atoms) before and after a chemical reaction (change), remains the same.
a)
True
b)
False
56.
What is the law of conservation of mass?
a)
Matter changes when reacted or changed.
b)
The mass of all reactants are changed during a physical or chemical change
c)
The mass of the reactants is the same as the mass of the products
d)
The mass of the products is different than the mass of the reactants.
57.
What is the Law of Conservation of mass?
a)
Mass is created in a chemical reaction
b)
Mass is created in a physical change
c)
New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
d)
Mass is never created or destroyed
58.
What will weigh more when a chemical change is complete? The reactants before the chemical reaction, or the product after the reaction is complete?
a)
They both will weigh the same
b)
The product always weighs more than the reactant
c)
The reactant will weigh more than the product
d)
They both will loose mass after the reaction
Reset
