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Worksheetsbenchmark 6th
Total questions: 71
Worksheet time: 1hrs 4mins
Which of the following correctly represents an element?
Carbon Monoxide - CO
Copper - Cu
Salt - NaCl
Glucose - C6H12O6
Compounds are pure substances. What other substances are considered pure substances?
Solutions
Mixtures
Elements
Chemical reactions
Which of the following substances is an element?
CO2
NaS
KF
Co
Which of the following is a compound?
Co
Fe
H
CO
The chemical formula for baking soda, a common household chemical, is NaHCO3. How many elements are in this compound?
1
4
5
6
A student had a beaker with a small amount of baking soda. The student added a few drops of pickle juice to the baking soda and observed fizzing and bubbling. Based on observation, which of these can the student conclude?
No chemical reaction took place.
A chemical reaction produced a solid.
Only a physical change happened.
A chemical reaction produced a gas.
Which process can be used as evidence to identify the formation of a new substance?
A. Salt or sugar dissolves in hot water
B. The formation of a precipitate
C. Temperature change
D. Adding food coloring to cake icing to change the color
E. Adding food coloring to cake icing to change the color
F. Chemicals in fireworks explode into brilliant colors and give off smoke when exposed to a flame
Processes A, B, C, and D
Processes B, C, E, and F
Processes B, C, D, and F
Processes C, D, E, and F
A student is implementing an investigation of physical properties using samples of metals, nonmetals, and metalloids. She used a battery, wires, and a bulb to test if each of the samples will complete the circuit causing the bulb to light. Next she shined a bright light on each of the samples. Which physical properties is the student investigating?
Streak and hardness
Luster and conductivity
Streak and conductivity
Hardness and luster
After an investigation, students were disposing of leftover substances. One student poured all of the liquids down the sink drain. A few seconds later, a white cloud formed above the sink, and the student's eyes began to burn. Which statement accurately describes what occurred?
The student did not wait 5 minutes in between pouring each liquid down the drain.
The student did not allow water to run in the sink after pouring each liquid down the drain.
A physical changed occurred resulting in the formation of a new substance.
A chemical changed occurred resulting in the formation of a new substance.
Copper is a common metal. Which of the following properties does this metal most likely have?
Low conductivity, low malleability, and low luster
High conductivity, high malleability, and low luster
Low conductivity, high malleability, and high luster
High conductivity, high malleability, and high luster
A student is examining an object in science class. It is pale yellow, brittle solid, with no shine. The sample is most likely a -
metalloid
nonmetal
semi-conductor
metal
A hydroelectric power plant works by using flowing water to turn a turbine. The turbine is connected to a magnet inside of a generator. When the magnet turns inside of the generator, the coiled wire surrounding the magnet will generate the type of energy that is sent along power lines to your home. When energy transformation occurs in a hydroelectric power plant?
Mechanical to electrical
Electrical to mechanical
Chemical to mechanical
Chemical to electrical
Which scenario describes a transformation of thermal energy into chemical energy?
You turn on the heater in your car.
The UV light from the Sun causes a sunburn.
The Sun's energy causes you to sweat.
The oven bakes dough into bread.
Thermal energy to electric energy
Electrical energy to thermal energy
Thermal energy to mechanical energy
Mechanical energy to thermal energy
If it takes a bowling ball 2.5 seconds to travel down an 18.29-meter, what is the speed of the bowling ball to the nearest hundredth?
7.316
7.32
7
45.73
A 55 kg student was riding his skateboard to school. He traveled 200 meters in 40 seconds. What was the student's average speed in meters per second.
800
2200
5
1.38
A student who was training for a cross country race jogged for 2.0 hours and covered a distance of 14.0 kilometers. What was the average speed of the student?
28.0 km/hr
7.0 km/hr
12.0 km/hr
0.14 km/hr
When a hawk eats a mouse and then uses the energy from the mouse to fly, the hawk's body converts -
mechanical energy to chemical energy
thermal energy to mechanical energy
chemical energy to mechanical energy
mechanical energy to thermal energy
Robert Hooke noticed what looked like tiny boxes when he looked at a sample of cork under a microscope. He called this discovery ______.
Cells
Rooms
Microscopic
Cardboard
Light travels in waves.
(MS-PS4-2)
True
False
In, space, sound travels and light does not.
(MS-PS4-1)
True
False
Which of the following is an example of reflection?
(MS-PS4-3)
straw looking bent in the water
looking at your image in the mirror
wearing a black shirt on a sunny day
What factors determine an objects kinetic energy?
its height and mass
its mass and speed
its size and weight
its speed and height
Which is the lowest temperature?
0°C
0°F
32°F
42°F
Which is the smallest unit of all living things?
cell
organ
organelle
tissue
A person who ate a salad made of lettuce, tomatoes, cheese, and ham is a (an)
carnivore
detritivore
herbivore
omnivore
Which of the following is NOT a type of air pollution?
CFC's
smog
carbon monoxide
fog
Which is a consequence of deforestation?
Animal habitats are destroyed.
Carbon in the atmosphere is reduced.
Soil erosion is prevented.
The rate of extinction is slowed.
Which property applies to matter that consists of particles vibrating in place?
has a definite shape
takes the shape if its container
flows easily when warmed
particles are far apart
What is true of energy?
It cannot change form.
Most forms cannot be conserved.
Most forms cannot be traced to a source.
It cannot be created or destroyed.
What is the source of most energy on Earth?
air
soil
the Sun
water
Which is an example of a renewable resource?
geothermal energy
natural gas
nuclear energy
petroleum
Which caused the greatest increase of the growth of the human population?
high death rates
widespread disese
medical advances
pollution
Which of the following is the flow of electric charges
electric current
voltage
magnet
electric insulator
Which energy is stored energy?
potential
thermal
radiant
kinetic
Which term describes a transfer of thermal energy?
heat
cold
temperature
thermal energy
How is an element different than a compound?
An element is made of only one kind of atom.
An element is a pure substance.
A compound is made of only one kind of atom.
A compound is a pure substance.
Which statement best explains the difference between the substances CO and Co.
CO is an element, but Co is a compound.
CO contains calcium, but Co does not.
CO is made of two elements, but Co is made of only one.
CO is a chemical symbol, but Co is a chemical formula.
How many different types of elements are represented in the chemical formula NaHCO3
2
3
4
5
What is a Compound?
One element and more than one atom.
Two or more elements combined; more than one capital letter.
Two or more atoms combined; a number greater than one.
Two or more small particles joined together.
What is an Atom?
The smallest piece of a living thing.
The smallest particle or piece of a pure substance.
The largest particle or piece of a pure substance.
Two compounds put together.
