1.
SUMMATIVE TEST NO. 1
in
SCIENCE 7

2.
I. Choose the letter of the correct answer. Write your answer on a piece of paper.
1. What are the types of variables in a scientific experiment?
a. controlled, dependent, independent
b. independent, dependent, manipulated
c. dependent, codependent, manipulated
d. manipulated, controlled, independent
2. What is the variable present in an experimental set up and not in a controlled set up?
a. dependent b. independent c. controlled d. manipulated
3. This variable is present to both experimental and controlled set up
a. dependent b. independent c. controlled d. manipulated
4. A type of observation that uses your 5 senses?
a. Qualitative
b. Quantitative
c. Inference
d. Prediction

3.
5. The variable that you measure is the ______________.
a. independent b. dependent c. controlled d. manipulated
6. Dr. Eversole sets up experiment on plants to see how different liquids affect plant growth. Each plant in the
experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight,
and listens the same music. In this investigation, what is the independent variable?
a. type of plant b. water, apple juice, milk c. plant growth d. sunlight, amount of soil, music
7. Mr. G normally uses praise as a reward to train his dog. He wants to know the best way to train his dog, so he
sets up an experiment to find out if there is a better way to get his dog to respond to commands. What is his
dependent variable?
a. Type of reward
b. Type of dog
c. Praise
d. Amount of time the dog follows commands

4.
8. Which of the following is an example of an inference?
a. What will happen if we put 25 pennies on our bridge?
b. Our bridge held 25 pennies when we tested it.
c. think that our bridge will hold 25 pennies because we strengthened it by folding it.
d. Our bridge did not hold 25 pennies when we tested it.
9. Which of the following is an observation about grasshoppers that a science class could have made on
their nature walk?
a. The grasshoppers are green with long back legs and antennae.
b. The grasshoppers will probably eat more grass than tree leaves.
c. The grasshoppers will live longest in a container filled with plants.
d. The grasshoppers all hatched from eggs laid the year before.
10. This part of the experiment serves as a basis of comparison; the one variable being tested has been
omitted.
a. experimental set up
b. controlled set up
c. data
d. variable

5.
For number 11. Refer to the figure below.
A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of
plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7.Which is
the best conclusion for this experiment?
a. Acid has no effect on the health of this type of plant.
b. Low acidity is harmful to this type of plant.
c. High acidity is helpful to this type of plant.
d. High acidity is harmful to this type of plant.

6.
12. Choose the correctly written hypothesis for "What is the effect of putting Pam Cooking Spray on the bottom of a sled?
a. I think the sled will slide faster.
b. If I put Pam Cooking Spray on the bottom of my sled, then I will slide faster.
c. If I put Pam Cooking Spray on the bottom of my sled, then I will win the race.“
d. None of the above.
13. What is the first step in the scientific method?
a. Make an observation
b. Make a hypothesis
c. Design and conduct an experiment
d. Share your results
14. Mrs. Register sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the constant.
a. distance traveled by the ball
b. mass of the ball
c. height of the ramp
d. weight of the ball

7.
For item no. 15 refer to the figure below.
What can you infer about the temperature for E.coli bacterial growth?
a. E. coli does not grow well at low and high temperatures.
b. E.coli grows best at very low temperatures
c. E coli will continue to grow at very high temperatures.
d. E.coli grows best at very high temperatures.

8.
II. A. Qualitative and Quantitative Observation. Write your first name if
the following observation is a qualitative and your last name if it is
quantitative.
_________________16. There were 5 children on the playground.
_________________17. The sky was blue and filled with clouds today.
_________________18. The leaves on the plant are turning brown.
_________________19. The plant has grown 4 cm since yesterday.
_________________20. Dolphins have smooth skin.

9.
B. Observation vs. Inference. Refer to the figure below. Write “O” if the following statement is an
observation and “I” if inference.
_____21. The man is wearing a striped tie.
______22. The car seems to be a VW Buggy
______23. The man's tongue is sticking out.
______24. The dog is smarter than the human.
______25. The dog has long ears.

10.
SUMMATIVE TEST NO. 2
in
SCIENCE 7

11.
I. Multiple Choices. Direction: Choose the letter of the correct answer.
1. Water is made up of hydrogen and oxygen, two elements that were chemically combined. This
makes water a/an
a. atom b. element c. compound d. mixture
2. An element is a ___ that cannot be separated into simpler substances by physical or chemical
means.
a. pure substance
b. matter
c. mixture
d. solution
3. Which of the following substance is NOT a compound?
a. carbon dioxide
b. salt
c. table sugar
d. hydrogen

12.
4. How many different elements are in this chemical formula: C2H2ClK3
a. 6 b. 2 c. 8 d. 4
5. What are the constituent elements of the compound NaCl?
a. Sodium and Chlorine c. Chlorine and Carbon
b. Sodium and Carbon d. Carbon and Oxygen
6. Which statement best describes an element?
a. made from mixture
b. pure, made of only one thing
c. Chemically bonded
d. can be separated
7. Elements are represented by a ___________.
a. chemical formula
b. chemical symbol
c. atom
d. molecules

13.
8. Which item is not made of matter?
a. Air b. pencil c. water d. shadow
9. One thing that the periodic table does NOT tell you is
a. Atomic mass b. atomic number
b. Atomic symbol d. element shape
10. How many molecules of water do we have in a chemical formula H2O?
a. 1 b. 2 c. 3 d. 4

14.
II. Complete the table below.
III. Enumeration.
16-20. Examples of elements
21-25. Examples of compounds
Compound Name (Generic/Common name) Chemical
Formula
Constituent
Elements
Total number of
atom
11. Water H2O
12. Table salt Sodium, Chlorine
13. Sugar 45
14. Vinegar CH3COOH
15. Baking soda 6

15.
3rd Summative Test
In
Science 7

16.
1.Which passes through the filter when you have a mixture of water and
sugar?
a. Only the water
b. water and sugar
c. Only the sugar
d. none
2. What do you call a solution that has more than the average solute
dissolved by a certain amount of solvent?
A. saturated
B. supersaturated
C. unsaturated
D. soluble

17.
3. Which of the following should be done to make the powder
dissolve faster when poured into a liquid?
a. freeze the mixture
b. add more powder to the liquid
c. stir the powder in the liquid
d. store the mixture in a dark place
4. Which dissolves a solute?
a. solvent
b. solution
c. mixture
d. salt

18.
5. Which is the solvent in the mixture of Kool-Aid powder, sugar, and
water?
a. powder
b. water
c. sugar
d. powder and sugar
6. What do you call a solution when its solvent cannot hold solute
anymore?
a. diluted
b. unsaturated
c. saturated
d. supersaturated

19.
7. Without changing the temperature, what will happen if you add
more sugar to the tea that is already saturated?
a. the sugar will not dissolve
b. all the sugar will dissolve
c. some of the sugar will dissolve
d. nothing will happen
8. What solution is being shown when you add salts to water in a test
tube, and all the salt dissolves?
a. supersaturated
b. unsaturated
c. saturated
d. soluble

20.
9. Which of the following will cause a cube of sugar to dissolve faster?
a. chopping in into pieces
b. adding cold water
c. stop stirring the water
d. adding more sugar
10. Which combination of substances is best described when a sugar
is added to a cup of water and all of the substances are spread out
evenly?
a. mixture
b. a solution
c. A and B
d. none

21.
II. Complete the table. Identify the solute and solvent of the following solution. (Write Solid,
Liquid, or gas)
EXAMPLES1 SOLUTE SOLVENT SOLUTION
11. Brass Solid _____________ Solid solution
12. Air Gas Gas ___________
13. Dental Amalgam _____________ liquid Solid Solution
14. 18 Karat gold necklace Solid ______________ Solid solution
15. Aerosol ______________ Gas Gas solution
16. Bronze Solid Solid ____________
17. Salt solution Solid ______________ Liquid solution
18. Tea Solid Liquid ____________
19. Stainless steel ______________ Solid Solid solution
20. Coffee drink Solid ______________ Liquid solution
21. Alcohol Solution ____________ Liquid Liquid Solution
22. Sugar Solution Solid Liquid _______________
23. Coffee solution ____________ Liquid Liquid solution
24. Cologne Liquid _____________ Liquid solution
25. Natural gas Gas Gas _______________

22.
III. Enumeration.
26-27. Components of a solution
28-30. Type of Solution