Worksheets8th Grade - NSCAS Review - Parts I & II
Total questions: 35
Worksheet time: 18mins
During their experiment, Ty and Joe had observed that the plant had grown 3 cm. This is an example of
qualitative data
quantitative data
a conclusion
an inference
Amy’s bike had been left outside, and the frame began to rust. This is an example of
a physical property
a chemical property
a physical change
a chemical change
After completing the experiment with multiple trials, Lauren and Maddie decided that sand would provide better drainage for plants than clay. Their decision is an example of
an inference
a conclusion
a theory
a hypothesis
Ben and Melissa are completing a experiment in which they are trying to determine if the length of the chain on a swing set will affect the number of times a swing will move back and forth. Which of the following would help Ben and Melissa get more accurate results to their experiment?
using different kinds of chains
having more than 1 independent variable
repeated trials
having more than 1 dependent variable
Which of the following is an example of an element?
water
oxygen
sodium chloride (NaCl)
hydrogen peroxide
Joanna burned a piece of paper. This is an example of a(n)
physical property
physical change
chemical property
chemical change
Tess placed salt in water and stirred it. Tess could no longer see the salt, What happened to it?
sublimation
it evaporated
a chemical change
it dissolved
Mariah wants to measure the volume of a solution. Which tool would she use?
a beaker
a spring scale
an Erlenmeyer flask
a graduated cylinder
Tommy believes that water will take longer to heat than soil. He based his assumption on a lesson he learned earlier in science class. This is an example of a(n)
Group of answer choices
a law
an inference
a theory
a repeated trial
HCl (Hydrogen Chloride) would be an example of which of the following?
a compound
an element
an isotope
an atom
The sun changing a liquid to a gas on a body of water is an example of
condensation
evaporation
vaporization
sublimation
Mario observed that mold changed from a green to an orange color. This is an example of a(n)
quantitative observation
a hypothesis
a qualitative observation
both an quantitative and qualitative observation
The life science class wanted to determine if the type of batteries used in a flashlight had the same longevity. They decided to use 4 different types of batteries - Duracell, Energizer, Rayovac, and a store brand name battery. They put the batteries in four flashlights and measured the length of time the battery lasted. The same type of flashlight was used, the temperature of the room was the same, and the flashlights were all turned on in the same location. These are examples of what?
controlled variables
manipulated variables
independent variables
dependent variables
The life science class wanted to determine if the type of batteries used in a flashlight had the same longevity. They decided to use 4 different types of batteries - Duracell, Energizer, Rayovac, and a store brand name battery. They put the batteries in four flashlights and measured the length of time the battery lasted. The same type of flashlight was used, the temperature of the room was the same, and the flashlights were all turned on in the same location. These are examples of what?
controlled variables
manipulated variables
independent variables
dependent variables
When dry ice is exposed to air, it instantly turns from a solid to a gas without going through the liquid phase first. This is an example of
condensation
vaporization
sublimation
evaporation
The life science class wanted to determine if the type of batteries used in a flashlight had the same longevity. They decided to use 4 different types of batteries - Duracell, Energizer, Rayovac, and a store brand name battery. They put the batteries in four flashlights and measured the length of time the battery lasted. The length of time the batteries lasted is the ______.
controlled variable
manipulated variable
independent variable
dependent variable
Olivia boiled water, it changes from a liquid to a gas. Which of the following statements is true about what happened to the water?
it went through a phase change, which is a physical change because it is still water
it went through sublimation because it changed directly from a solid to a gas
the mass of the water decreased as it went from a liquid to a gas
it went through a chemical change because it changed from water to water vapor
The life science class wanted to determine if the type of batteries used in a flashlight had the same longevity. They decided to use 4 different types of batteries - Duracell, Energizer, Rayovac, and a store brand name battery. They put the batteries in four flashlights and measured the length of time the battery lasted. The type of battery used in this experiment is
the scientific question
the controlled variable
the independent variable
the dependent variable
Jill wants to find out the atomic mass of the element iron. Which tool would help her?
a spring scale
a graduated cylinder
the periodic table of elements
a ruler
When iron rusts and changes to iron oxide, which is true about the total number of oxygen and iron atoms before and after the change?
the total number of oxygen atoms and the total number of iron atoms remains the same
the total number of oxygen atoms increases but the total number of iron atoms decreases
there is an increase in both the number of oxygen and iron atoms
the total number of oxygen atoms decreases but the total number of iron atoms increases
Which is an example of chemical property?
pH
density
color
mass
Trenton was performing a science experiment in which he measured the distance from a particular place to the equator, then recorded the average daily temperature for a year. Because Tampa, Florida is closer to the equator that Bismark, North Dakota, Trenton _________________ that the average temperature would be greater in Tampa.
derived
concluded
hypothesized
theorized
Using the diagram above, if we look at the number 3 in Lithium and the number 6.9, what can be infer?
there are approximately 4 neutrons in lithium
there are 3 electrons in lithium
there are 3 protons in lithium
all the options listed
The difference between hydrogen and helium is that
Hydrogen has one more electron than helium
Helium has one more proton than hydrogen
There is no difference between hydrogen and helium
Hydrogen has one more proton than helium
Using the diagram above, the number 1 above the H in hydrogen can tell us what information?
H has 1 neutron
H has 1 proton
H has 1 proton and 1 neutron
H has a mass number of 1
Scientists tend to publish their work so that other scientists may analyze the strengths and weaknesses of the work. This is an example of a(n)
drawing conclusions
repeated trials
scientific critique
making inferences
Elizabeth brings out a ice cold glass of iced tea to enjoy on her front porch during the summertime. She notices beads of water dripping from the outside of her glass. Which BEST explains this phenomenon?
the water from inside the glass spilled to the outside of the glass causing the water droplets to form
the water vapor in the air condenses causing the beads of water on the outside of the glass
the water vapor in the air evaporated causing the water droplets on the outside of the glass
the water inside the tea evaporated causing the water droplets to appear on the outside of the glass
Based on the periodic table above, Hydrogen, Lithium, Sodium, and Potassium belong to the same
family or group
period
element
isotope
Potassium, magnesium, an aluminum are all ______.
nonmetals
noble gases
metals
halogens
Mass cannot be created nor destroyed. This is an example of a(n)
theory
inference
hypothesis
scientific law
Which of the following are examples of vaporization?
in subfreezing air, water vapor turns directly into ice
the water in the mud puddle evaporated
the glass of ice tea was taken outside on a humid day and beads of water formed on the glass
the dry ice formed steam
Using the diagram above, you know that Mercury has ____________ protons.
80
200
120
50
The table below shows different sets of elements. Based on what you know about the periodic table of elements, which grouping would most likely react similarly?
Group 1Beryllium (Be), Hydrogen (H), Iron (Fe), and Cobolt (Co)Group 2Sodium (Na), Magnesium (Mg), Nickel (Ni), and Hydrogen (H)Group 3Hydrogen (H), Lithium (Li), Sodium (Na), and Potassium (K)Group 4Oxygen (O), Chlorine (Cl), Neon (Ne), and Titanium (Ti)
Group 1
Group 2
Group 3
Group 4
Snow forming directly in the clouds water vapor without becoming a liquid first is an example of
deposition
evaporation
condensation
sublimation
Using the diagram above, H is the __________ for hydrogen
atomic number
atomic mass
atomic symbol
number of protons
