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WorksheetsChemistry comp 6th
Total questions: 89
Worksheet time: 45mins
List the three routes of entry for a substance to get into your body
Inhalation, ingestion, skin absorption
Flammable, ingestion, Corrosive
absorption, toxic, Corrosive
Inhalation, toxic, Corrosive
Explain how and when the following safety equipment would be used:
Fire Extinguisher:
Wash toxic or corrosive chemical off skin and face
Extinguish fire on person
Extinguish fire caused by flammable substances
Dispose of chemicals, wash and clean materials, wash hands arms that may have come in contact with chemicals
Explain how and when the following safety equipment would be used:
Fire Blanket:
Wash toxic or corrosive chemical off skin and face
Extinguish fire on person
Extinguish fire caused by flammable substances
Exhaust toxic fumes produced by chemicals
Explain how and when the following safety equipment would be used:
Safety Shower/ Eye Wash:
Dispose of chemicals, wash and clean materials, wash hands arms that may have come in contact with chemicals
Wash toxic or corrosive chemical off skin and face
Exhaust toxic fumes produced by chemicals
Flammable, toxic, Corrosive
Explain how and when the following safety equipment would be used:
Lab Sink:
Exhaust toxic fumes produced by chemicals
Dispose of chemicals, wash and clean materials, wash hands arms that may have come in contact with chemicals
Extinguish fire caused by flammable substances
Extinguish fire on person
Explain how and when the following safety equipment would be used:
Fume Hood:
Exhaust toxic fumes produced by chemicals
Flammable, toxic, Corrosive
Dispose of chemicals, wash and clean materials, wash hands arms that may have come in contact with chemicals
Extinguish fire caused by flammable substances
A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were added before each test flight. As each paper clip
Independent = paper clips (#)
Dependent = distance (cm) plane flew
Control = same size plane
Clips | distance
Independent = distance (cm) plane flew
Dependent = paper clips (#)
Control = same size plane
Clips | distance
Independent = paper clips (#)
Dependent = same size plane
Control = distance (cm) plane flew
Clips | distance
Independent = same size plane
Dependent = distance (cm) plane flew
Control = paper clips (#)
Clips | distance
Identify the name and symbol of the SI Unit for
Length.
Meter m
Kilometer Kg
Gram g
Second s
Identify the name and symbol of the SI Unit for
Mass.
meter m
Kilogram kg
Mole s
Kelvin K
Identify the name and symbol of the SI Unit for
Amount of Substance.
Kelvin K
Mole mol
meter m
Second s
Identify the name and symbol of the SI Unit for
Time.
mole mol
Kilogram kg
Seconds s
Kelvin K
Identify the name and symbol of the SI Unit for
Temperature.
Kilogram kg
meter m
Second s
Kelvin K
Name the equipment / tool and describe their functions.
Erlenmeyer flask, mixing
Bunsen burner, melting, heating
balance, measurement (mass)
beaker, mixing
Name the equipment / tool and describe their functions.
Erlenmeyer flask, mixing
Bunsen burner, melting, heating
balance, measurement (mass)
volumetric flask, measurement (volume)
Name the equipment / tool and describe their functions.
volumetric flask, measurement (volume)
Graduated cylinder, measurement (volume)
balance, measurement (mass)
breaker, mixing
Name the equipment / tool and describe their functions.
Volumetric flask, measurement (volume)
beaker, mixing
Erlenmeyer flask, mixing
balance, measurement (mass)
Name the equipment / tool and describe their functions.
Graduated cylinder, measurement (volume)
Volumetric flask, measurement (volume)
beaker, mixing
Erlenmeyer flask, mixing
Name the equipment / tool and describe their functions.
Erlenmeyer flask, mixing
Graduated cylinder, measurement (volume)
balance, measurement (volume)
beaker, mixing
Identify hazard symbol:
toxic
corrosive
flammable
fire
Identify hazard symbol:
flammable
toxic
corrosive
all above
Identify hazard symbol:
toxic
flammable
corrosive
none
Define Accuracy
closeness to actual or true value
closeness to actual or repeated measurements
closeness of measurements or repeated measurement of similar value
repeated measurement of similar value
Define Precision:
closeness of to actual or true value
repeated measurement of similar value
closeness of to actual
closeness of measurements or repeated measurement of similar value
A measurement was taken three times. The correct measurement was 32.0 g. which set of the measurements is accurate, precise, both or either
32.1 g, 32.2g, 31.9 g
accurate, precise, both
either
precise, accurate
precise
A measurement was taken three times. The correct measurement was 32.0 g. which set of the measurements is accurate, precise, both or either
38.3 g, 67.5g, 98.0 g
accurate, precise, both
neither
accurate
precise
A measurement was taken three times. The correct measurement was 32.0 g. which set of the measurements is accurate, precise, both or either
78.5 g, 78.6 g, 78.7 g
accurate, precise, both
neither
accurate
precise
convert 44.3 L to mL
443 ml
443,000 ml
44,300 ml
4430 ml
Convert 16.18 cg to g
1.618g
1618g
16.18g
16180g
Convert 3,500 kg to g
35,000 g
35,000,000 g
3,500,000 g
35 g
m = 12.5 g, V = 7.93 mL. Find the density
16.18 g/mL
1.58 g/mL
9.8 g/mL
15.8 g/mL
d = 5.88 g/cm3 and V = 54.1 cm3 . Find mass
31.811 g
3.18 g
318.11 g
318 g
m = 78 kg and d = 6.31 kg/L . Find volume
1.2 L
12.36 kg/L
12.36 L
123.6 kg
Kenzie measured 68,5 mL of water in a graduated cylinder. She put a piece of metal with a mass of 19.78 g into the graduated cylinder. She read the volume of he water with the metal in it as 79.3 mL. What is the density of the metal?
0.8 mL
24.73 g/mL
24 g/mL
8 mL
There are five substances (A, B, C, D, and E) making up a heterogeneous mixture in a beaker. Based on the densities in the table, what is the order of the substances in the beaker from bottom to the top?
Top: E A C B D (1, 2, 3, 4, 5) Bottom: D B C A E( 5, 4, 3, 2, 1)
Top: C A B E D (2, 5, 3, 2, 1) Bottom: B C E D A (5, 3, 4, 2, 1)
Top: B C E D A (5, 3, 4, 2, 1) Bottom: A B C D E (1, 2, 3, 4, 5)
Top: A B C D E (1, 2, 3, 4, 5) Bottom: D B C A E( 5, 4, 3, 2, 1)
Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.
F2
element (E)
compound (C)
Homogeneous (HM)
heterogeneous (HEM)
Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.
Koolaid
heterogeneous (HEM)
Homogeneous (HM)
compound (C)
element (E)
Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.
Selenium
element (E)
heterogeneous (HEM)
compound (C)
Homogeneous (HM)
Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.
Muddy water
compound (C)
Homogeneous (HM)
element (E)
heterogeneous (HEM)
Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.
Sugar
element (E)
compound (C
(HM)heterogeneous (HEM)
heterogeneous (HEM)
Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.
Chocolate chip ice cream
heterogeneous (HEM)
Homogeneous (HM)
compound (C)
element (E)
Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.
Air
element (E)
compound (C)
Homogeneous (HM)
heterogeneous (HEM)
Classifications of Matter: Identify each as element, compound, homogeneous or heterogeneous mixture.
Iron in water
element (E)
compound (C)
Homogeneous (HM)
heterogeneous (HEM)
If solid titanium metal is heated to a liquid, this phase change is called ______________
liquid
melting
solid
gas
Substances that are in the _____________ phase have particles that are moving rapidly and will compress or expand to fit the container they are in.
melting
gas
liquid
sublimation
If a bottle of liquid acetone if left open, some of the acetone will evaporate into the ____________ phase.
freezing
solid
gas
melting
Substances that are in the ___________ phase have a definite volume but no definite shape and the particles slide over each other.
solid
liquid
gas
sublimation
When nitrogen is cooled from a _________ to a liquid, this is called condensation.
gas
solid
sublimation
liquid
When carbon dioxide changes from a solid to a gas, this called _____
gas
liquid
sublimation
solid
Substances that are in the _____________ phase have a definite volume and definite shape and the particles are barely moving.
sublimation
solid
gas
liquid
when water changes from steam directly to ice, this is called ____________
liquid
solid
deposition or desublimation
freezing
If molten (liquid) gold is cooled to solid gold, this phase change is called __________
deposition
sublimation
melting
freezing
Identify the following as a chemical (C) or physical property (P)
melting point
chemical (C)
physical property (P)
Identify the following as a chemical (C) or physical property (P)
conductivity
chemical (C)
physical property (P)
Identify the following as a chemical (C) or physical property (P)
volume
physical property (P)
chemical (C)
Identify the following as a chemical (C) or physical property (P)
color
chemical (C)
physical property (P)
Identify the following as a chemical (C) or physical property (P)
reacts with acid
chemical (C)
physical property (P)
Identify the following as a chemical (C) or physical property (P)
density
chemical (C)
physical property (P)
list 4 signs or ways to detect that a chemical change has occurred.
gas bubbles
color changes
precipitate
sound, light, heat, new substance formed
all above
Identify whether the following is a physical (P) or a chemical (C) change.
Melting lead
physical (P)
chemical (C)
Identify whether the following is a physical (P) or a chemical (C) change.
Grinding sugar
physical (P)
chemical (C)
Identify whether the following is a physical (P) or a chemical (C) change.
Digestion of food
physical (P)
chemical (C)
Identify whether the following is a physical (P) or a chemical (C) change.
Evaporating bromine
physical (P)
chemical (C)
Identify whether the following is a physical (P) or a chemical (C) change.
Burning gasoline
physical (P)
chemical (C)
Identify whether the following is a physical (P) or a chemical (C) change.
Reacting sodium in water
physical (P)
chemical (C)
Identify whether the following is a physical (P) or a chemical (C) change.
tearing aluminum foil
physical (P)
chemical (C)
Who thought atoms were small, hard, and "uncuttable"?
Thomson
Rutherford
Dalton, Democritus
Where are electrons located according to modern atomic theory?
sky
cloud
electron cloud
electron sky
who performed the cathode-ray tube experiment?
Dalton
Democritus
Thomson
Rutherford
who performed the gold foil experiment?
Dalton
Democritus
Rutherford
Thomson
Which theorists draw the atomic models below:
JJ. Thomson
Dalton
Ernest Rutherford
Which theorists draw the atomic models below:
Dalton
JJ.Thomson
Ernest Rutherford
Which theorists draw the atomic models below:
Dalton
Democritus
Ernest Rutherford
JJ. Thomson
Identify the mass, charge, and location of each subatomic particle.
Proton
Neutron
Electron
none
Identify the mass, charge, and location of each subatomic particle.
Proton
Neutron
Electron
Identify the mass, charge, and location of each subatomic particle.
Proton
Neutron
Electron
Atoms that have the same number of protons and electrons have no charge and are said to be ____________
masses
anions
neutral
neutrons
atoms
Atoms that have lost or gained electrons and have a charge are called _____
atoms
cations
electrons
ion
neutral
If an atom has more protons than ________ , then it has a positive charge.
protons
anion
electrons
isotopes
radioactive
If an atom has more _____ than ______, then it has a negative charge.
electrons, ion
masses, protons
electrons, protons
neutrons, neutral
Ions that have a positive charge are called ___, and ions that have a negative charge are called ____.
electrons, protons
cation, anions
masses, neutrons
neutral, neutrons
Atoms of the same element all have the same number of ____
isotopes
protons
elections
neutrons
Atoms of the same element that have different numbers of neutrons are called ____.
neutrons
masses
isotopes
anion
Since these atoms have different numbers of neutrons, they also have different atomic ____, ____ help to stabilize the nucleus; therefore, isotopes of a particular element vary in the stability of their nuclei.
electrons, protons
anion, cation
neutrons, radioactive
masses, neutrons
This results in some isotopes being more or less _______
isotopes
radioactive
neutral
protons
Which element is in group 3 and in period 5?
Y
Re
Tc
Ga
which element 75 protons?
Y
Zn
Re
Tc
which element has an average atomic mass of 65.39 amu?
Re
Zn
Tc
Ga
which element is in period 4 and in group 7?
Re
Zn
Tc
Ga
which element has 4 electron shells and is in group 13?
Zn
Ga
Tc
Re
