Republic of the Philippines
DEPARTMENT OF EDUCATION
Region X-Northern Mindanao
Division of Lanao del Norte
Kauswagan District
SULTAN DIMASANGCAY MANANGGOLO INTEGRATED SCHOOL
FIRST GRADING EXAMINATION
SCIENCE 7
NAME: _
GRADE/SECTION:
Direction: Choose the letter of the correct answer. Write your answer on the space provided.
Date: _
1. What is the purpose of a data analysis?
A. Interpret result in the experiment
C. Test a hypothesis
B. Communicate data
D. Control variables
2. Which of the following best describes the data gathered in a scientific investigation?
A. Variable
B. Numbers
C. Facts or information
D. Ideas you think are true
3. Which describes the purpose of a conclusion in the scientific investigation?
A. It gives sources of information to help the investigation.
B. It states an expected outcome of the investigation.
C. It states whether the data supports the hypothesis.
D. It explains the reason for doing the investigation.
4. Which type of data gathered in an experiment is considered to be an exact presentation in numeric form?
A. Qualitative data
C. Verbal data
B. Descriptive observation
D. Quantitative data
5. When your mother sent you to the market to buy fruits and vegetables, how did you choose the quality of fruits
and vegetables?
A. Ask the vendor to choose it for you.
C. Examine the skin of fruits and check dark spots.
B. Take any kind and pay right away.
D. Ask other costumer to choose the vegetables and fruits for you.
6. Which of the following steps in scientific investigation requires asking a question?
A. Gathering Data
B. Identifying Problem
C. Forming Hypothesis
7. When a researcher listens to the sounds of the whale, he/she is _
A. interpreting data
B. drawing conclusions
D. Making Observations
.
C. making observations
D. making a hypothesis
8. Which question has measurable observation?
A. Who made the first microscope?
B. How do giraffes adapt to their environment?
C. How long ago did dinosaurs live on the Earth?
D. Does the amount of salt in water affect the temperature at which it boils?
9. In order to come up with the best hypothesis, it must be
A. experimental
B. proven correct
C. observable
.
D. testable
10. Why are metals used in making kitchen utensils?
A. Metals are lustrous and can be polished.
B. Metals are ductile and can be drawn into wires.
C. Metals are malleable and can be made into thin sheets.
D. Metals are good conductors of heat and have high melting point.
11. What is the classification of carbon dioxide as a pure substance?
A. Compound
B. Element
C. Mixture
D. Solution
12. Which of the following elements has a name derived from “Norse, the god of war”?
A. Actinium
B. Germanium
C. Polonium
D. Thorium
13. Which of the following is considered as the “king of metals”?
A. Copper
B. Hafnium
C. Iron
D. Zinc
14. Bases are bitter and slippery by nature. Which of the following is an example of a base?
A. Antacid
B. Juice
C. Salt
D. Vinegar
15. Which of the following is a general characteristic of a base?
A. Bitter
B. Salty
C. Sour
D. Sweet
16. Which element has a chemical symbol derived from its origin?
A. Argon
B. Magnesium
C. Mercury
D. Platinum
17. What is represented by the letters found on each box of the Periodic Table?
A. Atomic Number
B. Chemical Symbol
C. Density
D. Mass Number
18. Nonmetals are known to be usually gases by state. Which nonmetal is considered as the gas of life?
A. Carbon
B. Neon
C. Nitrogen
Ds. Oxygen
19. Mango, the National Fruit of the Philippines, is known for its sour tastes when unripe. Which describes the
substances that taste sour?
A. Acids
B. Bases
C. Oxides
D. Salts
20. What term refers to the horizontal lines that run from left to right across the Periodic Table?
A. Dimensions
B. Families
C. Groups
D. Periods
21. Gold is usually used in jewelry and accessories. What property is shown by this metal?
A. Ductility
B. High melting point
C. Lustrous
D. Malleability
23. Nonmetals are usually gases at room temperature. What happens when they are in solid form?
A. Brittle
B. Crystallized
C. Granules
D. Hard
24. Antacids help neutralize acidity in stomach. What property is shown by these substances?
A. Acidic
B. Basic
C. Dilute
D. Neutral
25. Which of the following describes a heterogeneous mixture?
A. Clear in appearance
C. One observable phase
B. Uniform in appearance
D. Particles settled at the bottom of a container
26. When table salt dissolves in water, how does the resulting mixture appear?
A. It has two phases.
C. It is homogeneous in appearance.
B. Light cannot pass through it.
D. It is heterogeneous in appearance.
27. Which of the following mixtures can be separated by distillation?
A. alcohol in water
C. oil in coconut milk
B. flour dissolved in water
D. salt in patis
28. You mix soil and water in a jar. After a few minutes, the soil has settled at
the bottom of the jar and the
water is at the top. What classification of matter is this?
A. Compound
B. Element
C. Mixture
D. Pure substance
29. Which of the following is a homogeneous mixture?
A. Alcohol
B. Fruit salad
C. Halo-halo
D. Mango float
30. How many phases can be observed when oil and water are mixed?
A. One
B. Two
C. Three
D. Four
31. Which of the following describes a heterogeneous mixture?
A. Clear in appearance
C. One observable phase
B. Uniform in appearance
D. Particles settled at the bottom of a container
32. Which of the following is a mixture?
A. Distilled water
B. Sugar
C. Soy sauce
D. Salt
33. What process is involved in separating coconut pulp (sapal) from coconut milk?
A. Crystallization
B. Distillation
C. Filtration
D. Flotation
34. Which of the following is/are component/s of a solution?
A. solute
B. solvent
C. solute and solvent
D. sugar and salt
35. Which solution has the maximum amount of solute dissolved?
A. Saturated solution
C. Supersaturated solution
B. Unsaturated Solution
D. Super-unsaturated solution
36. You are given a 50 mL solution in a beaker. You add solute to the beaker and the solute dissolves. The
solution was
.
A. saturated
C. supersaturated
B. unsaturated
D. super-unsaturated
37. Which of the following simple tests can be performed to determine if the solution is saturated?
A. Adding water to the solution
C. Putting a beam of light to the solution
B. Evaporating solvent from a solution
D. Adding a small amount of solute and stir
38. A saturated solution contains _
.
A. greater amount of solute than solvent
C. equal amount of solute and solvent
B. lesser amount of solute than solvent
D. maximum amount of solute
39. In an ice tea mix, which part of the solution is the solute?
A. Ice
B. Ice tea
C. Tea powder
D. Water
40. A tablespoon of a substance is added to water and it disappears. Which of the following statements describes
the substance?
A. It is less dense than water.
C. It adds flavor to the water.
B. It heats the water.
D. It is soluble in water.
41. A part of the solution being dissolved is known as _
A. concentrate
B. dilute
_.
C. solute
42. When a solution is diluted, it has a high amount of
A. solute;solvent
D. solvent
to _
B. solution;solute
.
C. solvent;solute
D. solvent;solution
______ 43. pH=2.5;_______; pH=8.2:________
A. Acid, base
B. Acid, neutral
C. base, acid
D. base, neutral
______ 44. The table shows the result of observations on an extract from a plant. What is the nature of the extract?
Phase
color
Taste
feel
Liquid
Clear
Green
Bitter
slippery
A. Acid
B. Base
Reactions to blue
litmus paper
none
C. salt
Reactions to red
litmus paper
Turns blue
D. neutral
_____ 45. Chlorine, iodine and bromine are nonmetals. What BEST distinguishes a nonmetal from a metal is its_____.
A. Homogeneity
B. Boiling point
C. poor conductor of electricity
D. ductility
_____ 46. One of the properties of metals is?
A. They have varying points.
C. They are good conductors of heat.
B. They are used to prevent thermal or electrical conductivity.
D. They have low melting points.
_____ 47. Which is TRUE about nonmetals?
A. They have varying boiling points
C. They are good conductors of heat.
B. They are used as insulators.
D. They have high melting points.
______ 48. Some metals like silver and gold are used in making jewelry. What property of these metals is considered for this
purpose?
A. It is expensive
B. It is corrosive
C. it is malleable
D. it is shiny
______ 49. Sulfur, carbon and phosphorus are nonmetals. What BEST distinguishes a nonmetal from a metal is its____.
A. Its boiling point
B. Its homogeneity
C. its brittleness
D. its ductility
______ 50. Which of the following group of substances consists of nonmetallic elements?
A. Zinc, copper, gold
B. Oxygen, carbon, sulfur
C. Sugar, chloroform, naphthalene
D. Calcium chloride, lead oxide, sodium bicarbonate