Quiz about Science UIL Chemistry

Question 1

A student creates diagrams of two models to show magnified views of molecular motion in a solid and a liquid, as shown.

Answering which question will enable the student to determine which sample has more energy?

Accepted Answer

Which sample has the most molecular motion?

Answer

Which sample has the most molecules?

Answer

Which sample has the largest molecules?

Answer

Which sample has molecules with definite volume

Question 2

Which diagram represents the change of ice to liquid water?

Accepted Answer

a

Answer

c

Answer

d

Answer

b

Question 3

Question 3.

Accepted Answer

Which sample has particles that are sliding past each other?

Answer

Which sample has particles that are electrically charged?

Answer

Which sample has particles that are tightly organized in an orderly array?

Answer

Which sample has particles that are quickly moving away from each other?

Question 4

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 5

Accepted Answer

C

Answer

D

Answer

A

Answer

B

Question 6

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 7

How do the atoms of a solid move?

Accepted Answer

Atoms in a solid only shake back and forth in place.

Answer

Atoms in a solid move freely and quickly.

Answer

Atoms in a solid move the same as in a liquid

Answer

Atoms in a solid do not move.

Question 8

Question 8.

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 9

Accepted Answer

C

Answer

A

Answer

D

Answer

B

Question 10

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 11

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 12

10. Students in Ms. L's class are designing experiments using baking soda and vinegar. Group 1 places 25 grams of vinegar in a flask, 5 grams of baking soda in a balloon, stretches the balloon over the mouth of the flask, and combines the baking soda and vinegar. The flask is weighed throughout the experiment. The picture shows Group 1's experiment.

Accepted Answer

The final mass in Group 2's experiment will be less than the final mass in Group 1's experiment, because gas is allowed to escape the flask, decreasing the final mass

Answer

The final mass in Group 2's experiment will be greater than the final mass in Group 1's experiment, because gas is allowed to enter the flask from the room, increasing the final mass.

Answer

The final mass in Group 2's experiment will be the same as the final mass in Group 1's experiment, because mass is always conserved during chemical reactions.

Answer

The final mass in Group 2's experiment will be greater than the final mass in Group 1's experiment, because mass is always added during chemical reactions.

Question 13

Question 13.

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 14

15. According to the law of conservation of matter, the number of Fe atoms needed to complete the following reaction is:

Accepted Answer

4

Answer

1

Answer

2

Answer

3

Question 15

Question 15.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 16

A teaspoon of dry coffee crystals dissolves when mixed in a cup of hot water. This process produces a coffee solution. The original crystals are classified as a

Accepted Answer

SOLUTE

Answer

SOLVENT

Answer

REACTANT

Answer

PRODUCT

Question 17

A balanced chemical equation reflects the idea that the mass of the products

Accepted Answer

equals the mass of the reactants.

Answer

is greater than the mass of the reactants.

Answer

is less than the mass of the reactants.

Answer

is not related to the mass of the reactants.

Question 18

The law of conservation of mass can be demonstrated by a chemical reaction. Which of the following models of a chemical reaction best represents the Law of Conservation of Matter?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 19

Question 19.

Accepted Answer

The amount of solute is increased, and the conductivity of the solution is increased.

Answer

The amount of solute is decreased, and the conductivity of the solution is decreased

Answer

The amount of solute is increased, and the conductivity of the solution is decreased.

Answer

The amount of solute is decreased, and the conductivity of the solution is increased.

Question 20

Accepted Answer

STUDENT 2

Answer

STUDENT 1

Answer

STUDENT 3

Answer

STUDENT 4

Question 21

How should the student design investigation 3 to finish testing the factors that affect the dissolving rate of KCL

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 22

Question 22.

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 23

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 24

Based on the predicted dissolving times for trials 1, 3, and 4, which statement contains the BEST prediction for the dissolving time in trial 2?

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 25

Question 25.

Accepted Answer

SOLUTION A

Answer

SOLUTION B

Answer

SOLUTION C

Answer

SOLUTION D

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