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Chemistry, Science
6th -
7thgrade
Science Grade 7 First Quarter Practice Test (Matter)
30 questions
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- 1. Multiple Choice
What is a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact?
experiment
hypothesis
law
theory
- 2. Multiple Choice
Which is the first step in scientific method?
analyzing results
making hypotheses
stating the problem
gathering data
- 3. Multiple Choice
Juan wants to learn more about the feeding habits of ants. What steps should Juan take to best study the
feeding patterns of ants?
form a hypothesis, conduct an experiment, record data, make a conclusion
conduct an experiment, form a hypothesis, make a conclusion, record data
form a hypothesis, record data, conduct an experiment, make a conclusion
record data, form a hypothesis, make a conclusion, conduct an experiment
- 4. Multiple Choice
A scientist hypothesizes that the temperature affects the number of eggs hatched in the incubator. What is the dependent variable in the experiment?
the number of eggs hatched
the incubator
the temperature
the sizes of eggs
- 5. Multiple Choice
A scientist wants to study the effects of fertilizer on plants sets up an experiment. Based on the data given, which is the control group?
Plant A
Plant B
Plant C
Plant D
- 6. Multiple Choice
What statement of the problem can be formulated based on the graph?
In which weather conditions show the greatest number of
earthworms?
Does plowing the soil affect how fast earthworms grow?
How is the size of earthworms affected by the seasons?
What is the effect of plowing soil on the number of
earthworms
- 7. Multiple Choice
In what weather condition do earthworms mostly grow
rainy
stormy
sunny
windy
- 8. Multiple Choice
What statement BEST describes the graph?
The number of earthworms cannot be predicted
More earthworms are grown in sunny weather than in stormy weather
Weather condition has no effect on the number of earthworms
Rainy condition has more earthworms grown than windy condition
- 9. Multiple Choice
Which of the following should be done to increase accuracy and reliability of a scientific investigation?
Carry out the procedure that includes a fair test
Record and report all observations and data
Search for answers in the internet
Select and justify a procedure to be used in answering the specific question
- 10. Multiple Choice
The chart below shows the number of flowers seen in a field.
- 11. Multiple Choice
The Dead Sea contains so much dissolved salt that people can easily float on it. The Dead Sea is an example of what kind of solution?
saturated
suspended
unsaturated
dilute
- 12. Multiple Choice
Which of the statements BEST describes the characteristic of a solution
A solution is always clear and transparent
A solution can be a homogeneous or heterogeneous mixture
Particles in a solution always pass in a filter paper
Solutions have the same composition and properties throughout
- 13. Multiple Choice
When a small amount of solute crystals is added to the supersaturated solution, what will happen to the solute crystals?
dissolve completely
grow bigger
remain unchanged
melt
- 14. Multiple Choice
You and your friend will be joining a contest to find out who can make coffee the fastest. Which of the following tips will NOT help them win?
cooling the water
heating the water
pound the coffee beans
stirring quickly
- 15. Multiple Choice
. It refers to the maximum amount of solute that can dissolve in a given amount of solvent at a certain temperature.
dilution
saturated solution
solubility
unsaturated solution
- 16. Multiple Choice
Which of the following is the most common solvent used at home?
carbon
oxygen
vinegar
water
- 17. Multiple Choice
Which of the following figure will sugar dissolve quickest?
- 18. Multiple Choice
Suppose I am preparing soup for lunch. I use salt to add flavor in it. What should I do to make the salt in my soup dissolve faster?
add more salt
add heat
let it sit
pound the salt first
- 19. Multiple Choice
What elements that make up the chemical formula C6H12O6 ?
Calcium, Helium, Oxygen
Carbon, Helium, Oxygen
Carbon, Hydrogen, Oxygen
Calcium, Hydrogen, Oxygen
- 20. Multiple Choice
What does the picture above represent?
element
solution
mixture
compound
- 21. Multiple Choice
water is an example of a ______.
pure substance
mixture
- 22. Multiple Choice
table salt is an example of a ______.
pure substance
mixture
- 23. Multiple Choice
soil is an example of a ______.
pure substance
mixture
- 24. Multiple Choice
air is an example of a ______.
pure substance
mixture
- 25. Fill in the Blank
It has a pH that is greater than 7 and tends to taste bitter and feels slippery
- 26. Fill in the Blank
It tastes sour, reacts with metals and carbonates, turns blue litmus red. They have pH levels lower than 7.
- 27. Fill in the Blank
It forms when an acid mix with a base
- 28. Multiple Choice
An unknown substance is added to a solution and the pH increases. What is the nature of the substance?
acidic
solvent
basic
solute
- 29. Multiple Choice
If you are a farmer, why do you need to know the pH of the soil before planting your crop?
The pH affects how much nutrients the soil become available to plants.
The pH turns the soil color from its original color to red
The pH of soil in a farm should be always acidic
The pH of soil in a farm should be always basic
- 30. Multiple Choice
“Gold is also a metal that is ductile; however, it is rarely used as an electrical wire.’’
What does the underlined word in the statement mean?
This means that it is attracted by a magnet
This means that it allows electricity to pass through a material
This means that it can be hammered or rolled into thin sheets without breaking
This means that it can be drawn into wires
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