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WorksheetsBenchmark Quarter #1
Total questions: 18
Worksheet time: 13mins
SC.8. P.9.2 George painted a picture on a canvas, and he mixed some colors together because he wanted to make a particular shade of blue. Mixing paint is an example of what kind of process?
Chemical Change
Physical Change
Forming a compound
Dissolving one substance into another
SC.8. P.9.2 Chemical changes are accompanied by signs that show that a chemical reaction has occurred. By making careful observations about the chemical reaction, a student can see one or more of these signs. The signs will provide evidence that the event is not a physical change. Which of the following is not likely to be evidence of a chemical change?
A form of matter changes state from solid to liquid.
A substance forms that releases heat and light.
Carbon dioxide, water, and ash are produced.
There are signs of rusting on a metal object.
SC.8. P.9.2 Derek left the ice cream out on the counter. He noticed that the ice cream began to melt when it was left out at room temperature. What process is Derek observing?
Physical Change
Chemical Change
Chemical Reaction
The formation of a new substance
Which of the following would definitely increase the rate of a reaction? (8.P.9.3)
decrease the size of the container
increase the size of the container
decrease temperature
increase temperature
Jamie has 3 glow sticks. She puts one in boiling water, another in ice water and another in room temperature water. What situation below is correct? (8.P.9.3)
The glow stick placed in the boiling water will be brightest but will last less time than the other glow sticks.
The glow stick placed in the ice water will be the brightest but will last less time than the other glow sticks.
The glow stick placed in the room temperature water will be the brightest and will last more time than the other glow sticks.
All three glow sticks will have the same brightness for the same amount of time.
Increasing the temperature of a chemical reaction increases the reaction rate. Which of the following statement explains WHY? (8.P.9.3)
Faster moving particles come in contact less often, which gives more chances for a reaction to happen.
Faster moving particles come in contact more often, which gives more chances for a reaction to happen.
Slower moving particles come in contact more often, which gives more chances for a reaction to happen.
Slower moving particles come in contact less often, which gives more chances for a reaction to happen.
Jane performed an experiment in which one substance (X) underwent a chemical change to form two new substances (Y and Z). According to the Law of Conservation of Mass, which statement is correct about the chemical change? (8.P.9.1)
The mass of Y and Z together is more than the mass of X.
The mass of Y and Z together is the same as the mass of X.
The mass of X is more than the mass of Y and Z together.
The mass of X increased to create the mass of Y and Z.
In a chemical reaction, 300 grams of hydrogen peroxide are combined with 200 grams of manganese dioxide. According to the Law of Conservation of Mass, what will be the mass of the product? (8.P.9.1)
500g
300g
200g
100g
In which of the following situations does the Law of Conservation of Mass apply? (8.P.9.1)
only in physical changes
only in chemical changes
in neither chemical and physical changes
in both chemical and physical changes
SC.6. E.6.2 A delta is defined as a triangular mass of sediment, silt, and sand, deposited at the mouth of a river. Deltas form when a river flows into a body of standing water, such as a sea or lake, and deposits large quantities of sediment. They are usually crossed by numerous streams and channels and have exposed as well as submerged areas. Which process was primarily responsible for the formation of a delta?
Glacial erosion
Cementation of sediment
Deposition of sediment
Weather of rocks
Which of the following statements is TRUE about dunes and deltas? (6.E.6.2)
A dune forms when an animal pushes sand into small hills and a delta forms when sediment is deposited at the mouth of a river.
A dune forms when sand is blown by the wind and gets trapped by beach grass and a delta forms when sediment is deposited at the mouth of a river.
A dune forms when sand is blown by the wind and gets trapped by beach grass and a delta forms when sediment is carried away from the mouth of a river.
A dune forms when sand is washed up on shore from the ocean and forms hills and a delta forms when sediment is carried away by a glacier.
Scientists notice that a river delta has been gradually getting larger and shallower over the past 50 years. What is the MOST LIKELY reason for this change? (6.E.6.1)
The river current increases and there is no change in the silt level.
The river current slows and there is no change in the silt level.
Silt is deposited as the river slows down.
Silt is deposited as the river speeds up.
Through freezing and thawing, a boulder is broken into smaller pieces. What is this an example of? (6.E.6.1)
physical weathering
chemical weathering
abrasion
deposition
What is NOT a benefit of using a scientific model? (7.N.3.2)
It can be used to visualize a complex idea or concept.
It can lose some accuracy in order to make it simple enough to use.
It can represent something too small or large to manipulate.
It can be safer, quicker, and less expensive for the scientist to work with.
When discussing the theory of atoms, a model is the only option. Why is this true? (7.N.3.2)
An atomic model is easier to manipulate than a real atom.
An atom is too dangerous to handle in a lab setting.
Atoms are too expensive to collect for scientific use.
An atom is too small to be observed in detail with current technology.
Which of the following describes a limitation of the drawing, but NOT a clay model? (7.N.3.2)
It cannot represent a living cell since the cytoplasm should be in constant motion.
It does not contain the correct number of nuclei.
It does not represent the main parts of a cell.
It cannot represent a living cell since a true cell is 3-dimensional.
Juan wants to know the answer to the question, “Does soil type affect how tall bean plants grow?” Which investigation would best help Juan answer this question? (7.N.1.3)
Juan decides to observe bean plants in the wild and measure their growth daily. Juan records the measurements in his science notebook.
Juan creates a model of a bean plant and observes its growth in different soil types daily for a month. Juan shares his findings with Ms. McDonald.
Juan goes to Ms. McDonald’s farm to observe the growth of the farm's beans. He also measures the growth of he bean plants in soil for a month.
Juan designs an experiment in which he plants bean plant seeds in two different soil types and also plants them in his yard as a control. He then measures the growth of each bean plant daily.
Sandy is conducting an experiment to see if the grades of dancers are better than the grades of baseball players. She organizes the dancers into group A and the baseball players into group B. She records the grades and makes the conclusion that the dancers have overall better grades. Is Sandy correct in her statement that this is an experiment? (7.N.1.3)
Sandy is correct this is an experiment because she obtained the grades and compared the groups.
Sandy is incorrect because she did not test anything, so this is an observation.
Sandy is incorrect because she did not collect the data accurately and this is an observation.
Sandy is correct because she organized the students into two groups.
