Quiz about Benchmark Quarter #1

Question 1

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?

Accepted Answer

Physical Change

Answer

Chemical Change

Answer

Forming a compound

Answer

Dissolving one substance into another

Question 2

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?

Accepted Answer

A form of matter changes state from solid to liquid.

Answer

A substance forms that releases heat and light.

Answer

Carbon dioxide, water, and ash are produced.

Answer

There are signs of rusting on a metal object.

Question 3

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?

Accepted Answer

Physical Change

Answer

Chemical Change

Answer

Chemical Reaction

Answer

The formation of a new substance

Question 4

Which of the following would definitely increase the rate of a reaction? (8.P.9.3)

Accepted Answer

increase temperature

Answer

decrease the size of the container

Answer

increase the size of the container

Answer

decrease temperature

Question 5

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)

Accepted Answer

The glow stick placed in the boiling water will be brightest but will last less time than the other glow sticks.

Answer

The glow stick placed in the ice water will be the brightest but will last less time than the other glow sticks.

Answer

The glow stick placed in the room temperature water will be the brightest and will last more time than the other glow sticks.

Answer

All three glow sticks will have the same brightness for the same amount of time.

Question 6

Increasing the temperature of a chemical reaction increases the reaction rate. Which of the following statement explains WHY? (8.P.9.3)

Accepted Answer

Faster moving particles come in contact more often, which gives more chances for a reaction to happen.

Answer

Faster moving particles come in contact less often, which gives more chances for a reaction to happen.

Answer

Slower moving particles come in contact more often, which gives more chances for a reaction to happen.

Answer

Slower moving particles come in contact less often, which gives more chances for a reaction to happen.

Question 7

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)

Accepted Answer

The mass of Y and Z together is the same as the mass of X.

Answer

The mass of Y and Z together is more than the mass of X.

Answer

The mass of X is more than the mass of Y and Z together.

Answer

The mass of X increased to create the mass of Y and Z.

Question 8

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)

Accepted Answer

500g

Answer

300g

Answer

200g

Answer

100g

Question 9

In which of the following situations does the Law of Conservation of Mass apply? (8.P.9.1)

Accepted Answer

in both chemical and physical changes

Answer

only in physical changes

Answer

only in chemical changes

Answer

in neither chemical and physical changes

Question 10

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?

Accepted Answer

Deposition of sediment

Answer

Glacial erosion

Answer

Cementation of sediment

Answer

Weather of rocks

Question 11

Which of the following statements is TRUE about dunes and deltas? (6.E.6.2)

Accepted Answer

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.

Answer

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.

Answer

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.

Answer

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.

Question 12

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)

Accepted Answer

Silt is deposited as the river slows down.

Answer

The river current increases and there is no change in the silt level.

Answer

The river current slows and there is no change in the silt level.

Answer

Silt is deposited as the river speeds up.

Question 13

Through freezing and thawing, a boulder is broken into smaller pieces. What is this an example of? (6.E.6.1)

Accepted Answer

physical weathering

Answer

chemical weathering

Answer

abrasion

Answer

deposition

Question 14

What is NOT a benefit of using a scientific model? (7.N.3.2)

Accepted Answer

It can lose some accuracy in order to make it simple enough to use.

Answer

It can be used to visualize a complex idea or concept.

Answer

It can represent something too small or large to manipulate.

Answer

It can be safer, quicker, and less expensive for the scientist to work with.

Question 15

When discussing the theory of atoms, a model is the only option. Why is this true? (7.N.3.2)

Accepted Answer

An atom is too small to be observed in detail with current technology.

Answer

An atomic model is easier to manipulate than a real atom.

Answer

An atom is too dangerous to handle in a lab setting.

Answer

Atoms are too expensive to collect for scientific use.

Question 16

Which of the following describes a limitation of the drawing, but NOT a clay model? (7.N.3.2)

Accepted Answer

It cannot represent a living cell since a true cell is 3-dimensional.

Answer

It cannot represent a living cell since the cytoplasm should be in constant motion.

Answer

It does not contain the correct number of nuclei.

Answer

It does not represent the main parts of a cell.

Question 17

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)

Accepted Answer

Sandy is incorrect because she did not test anything, so this is an observation.

Answer

Sandy is correct this is an experiment because she obtained the grades and compared the groups.

Answer

Sandy is incorrect because she did not collect the data accurately and this is an observation.

Answer

Sandy is correct because she organized the students into two groups.

Benchmark Quarter #1

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