Free Printable Science 7 Long Quiz

1.

Which of the following is an example of machine?

a)

Soap

b)

Tissue

c)

Sterilization

d)

Rice cooker

2.

Which of the following does NOT belong to the group?

a)

Drying

b)

Printer

c)

Fermentation

d)

Pasteurization

3.

What scientific skill is being used in the statement? The disastrous typhoon Ulysses is coming.

a)

Observation

b)

Inference

c)

Predicting

d)

Classifying

4.

Moana has a hypothesis regarding the effect of sunlight in her garden plants. What must she do to test her hypothesis?

a)

Observe a problem.

b)

Experimenting

c)

Formulate hypothesis.

d)

Concluding

5.

Elena has just gathered data from an experiment. She wants to organize her data. How can she do this?

a)

Write a conclusion.

b)

Put the data in graphs and tables

c)

Create another experiment to validate the data

d)

Formulate hypothesis

6.

Vinegar, vitamin C and fruit juices are all example of what kind of compound?

a)

Acid

b)

Base

c)

Salt

d)

pH

7.

We make use of any of our five sense while practicing this skill.

a)

Hypothesis

b)

Observation

c)

Classifying

d)

Inferring

8.

Five rectangular trays of different surface are filled with 100 mL of water each. These are then exposed to air for three hours. After this, the amount of water left was measured. What is the manipulated variable?

a)

Amount of water in the tray

b)

Surface areas of the tray

c)

Amount of water evaporated

d)

Time of exposure

9.

Which is a quantitative observation?

a)

The boy cries over the spilled milk.

b)

This building is taller than that building across the street.

c)

The party was a success.

d)

The birds sings beautifully.

10.

In a certain experiment, they found out that the hypothesis was proven wrong. The hypothesis was then rejected. We can therefore say that ________.

a)

The hypothesis was faulty.

b)

The experiment was successful.

c)

The hypothesis was correct.

d)

The experiment was unsuccessful.

11.

The height of the tallest mountain in the world is 8 848 meters. How is this in kilometers?

a)

88.48 Km

b)

8.0848 Km

c)

8.848 Km

d)

8848000Km

12.

The maximum speed of the bullet train in Japan is approximately 36 meters per second. How much is this in kilometers per hour?

a)

10 Km/h

b)

129.6 Km/h

c)

0.1 Km/h

d)

0.036 Km/h

13.

Which of the following substances cannot be dissolved in water?

a)

Sugar

b)

Salt

c)

Wax

d)

Soap

14.

One of the substances given is NOT the “likes” of water. Which one is it?

a)

Cooking oil

b)

Soy sauce

c)

Vinegar

d)

Chocolate

15.

This kind of matter has many components which can be separated by physical means.

a)

Matter

b)

Compound

c)

Mixture

d)

Elements

16.

Which of the following solutions does NOT belong to the group?

a)

Salt solution

b)

Bronze

c)

Brass

d)

Dental amalgam

17.

Which is true about mixture and compound?

a)

Smallest particle of mixtures are elements or compounds.

b)

Smallest particles of compound are elements.

c)

Mixtures and compound can both be separated physically into components.

d)

Mixtures and compound have definite composition.

18.

Which is a homogeneous mixtures?

a)

Ice and water

b)

Pizza

c)

Mayonnaise

d)

Fruit salad

19.

What property of M&M candies can be considered in deciding the method to separate them?

a)

Odor

b)

Size

c)

Color

d)

Taste

20.

Which of these characteristics is for a nonmetal?

a)

Luster

b)

Brittle

c)

Malleable

d)

Ductile

21.

Which element is a nonmetal?

a)

Copper

b)

Sulfur

c)

Calcium

d)

Aluminum

22.

Which metal is practical for making electrical wire?

a)

Copper

b)

Gold

c)

Nickel

d)

Cadmium

23.

Which of the following solutions would turn blue litmus paper into red?

a)

Soap

b)

Soft drinks

c)

Detergent

d)

Household Ammonia

24.

Substances containing acid or base must be _______________ before disposing.

a)

Acidified

b)

Neutralized

c)

Bleached

d)

Soaked

25.

Air is what kind of matter?

a)

Element

b)

Compound

c)

Mixture

d)

Pure substance

26.

Oxygen is a gaseous substance slightly soluble in water. If the temperature of water is decreased, the solubility of oxygen will ___________.

a)

Increase

b)

Decrease

c)

Remain unchanged

d)

Increase then increase

27.

What property of sand and pebbles should we consider in deciding to separate their mixture?

a)

Color

b)

Shape

c)

Size

d)

Odor

28.

Which of the following hypothesis cannot be tested?

a)

Materials with a density lower than that of water will float on water.

b)

Not all metals are attracted by a magnet.

c)

Compared to other soil type, loam is best for peanuts.

d)

Natural calamities are nature’s way of hitting back at people who abuse the environment.

29.

Which of the following should NOT be done in a science laboratory?

a)

Taste an unknown chemical.

b)

Keep alcohol away from the Bunsen burner.

c)

To dilute an acid, add it to the water.

d)

Always handle glassware with care.

30.

What is the percent by mass of sugar solution prepared by dissolving 12 grams of sucrose (table sugar) in 72 grams of solution?

a)

1.7 %

b)

0.16 %

c)

16.66%

d)

600%

31.

How many grams of table salt are present in 240 grams salt solution containing 3.5 % table salt?

a)

8.4grams

b)

2.4 grams

c)

3.5 grams

d)

68.57 grams

32.

Twenty milliliters of ethyl alcohol is present in 500ml wine. What is the percent by mass of ethyl alcohol?

a)

25%

b)

4%

c)

3.84%

d)

0.038%

33.

What is the proof number of ethyl alcohol wine if the percent volume is 3.6%?

a)

720

b)

7.2

c)

360

d)

3.6

34.

The pH of carrots is 5.0. How is it classified?

a)

Acidic

b)

Basic

c)

Neutral

d)

pH

35.

Convert 72 Kilometer per hour to meter/second.

a)

0.72 m/s

b)

20 m/s

c)

72 000m/s

d)

0.02 m/s

36.

Convert 13 years to days.

a)

390 days

b)

4 680 days

c)

156 days

d)

4 320 days

37.

A swimming pool is 5.50 meters long. What is the length of the swimming pool in centimeters?

a)

55 cm

b)

0.55cm

c)

550 cm

d)

5 500cm

38.

Which statement is a quantitative observation?

a)

There are several mango trees in the farm.

b)

There are 960 mango trees in the farm.

c)

The mango trees grow healthy in the farm.

d)

There are rows of mango trees in the farm.

39.

It is an instrument used for crushing and grinding solid substances into powder.

a)

Tongs

b)

Mortar and pestle

c)

Beaker

d)

Evaporating dish

40.

What would be a good reference when planning to do a scientific research?

a)

Picture

b)

Internet

c)

Magazines

d)

Newspapers

41.

Arrange the above materials from the most acidic to the most basic.

I. apple juice pH =3

II. soap solution pH = 9

III. pure water pH = 7

IV. facial wash pH = 5

V. Drain cleaner pH = 14

a)

I, II, III, IV, V

b)

I, IV, III, II, V

c)

V, II, III, IV, I

d)

V, IV, III, II, I

42.

What is the international standard base unit of length?

a)

Kilogram

b)

meter

c)

gram

d)

liter

43.

Dora can walked 5 Km in 3 hours. How far does she walk in meters?

a)

500 m

b)

50 m

c)

5m

d)

5000m

44.

How many atoms per particle in the compound given: Adenosine triphosphate (C₁₀H₁₆O₁₃P₃)

a)

10 C, 16 H, 13 O, 3 P

b)

4C, 4H, 4O, 4P

c)

1C, 1H, 1O, 1P

d)

42 (C H O P)

45.

Which method can be used to separate soil from water?

a)

Chromatography

b)

Evaporation

c)

Filtration

d)

Distillation

46.

Count the significant figures: 0.000803 cm

a)

7sf

b)

6sf

c)

3sf

d)

2 sf

47.

Which does NOT belong to the group?

a)

Fruit juice

b)

water

c)

smoke

d)

rain

48.

Convert the given standard notation to scientific notation: 2 600 000 Km

a)

2.6 X10 ⁶ Km

b)

2.6 X10 ^-6 Km

c)

26 X10 ⁵ Km

d)

2.6 X10 ^-5 Km

49.

The temperature in Baguio during “ber season” is about 13 ºC. What is this temperature in Kelvin?

a)

286 K

b)

55.4 K

c)

-10.55K

d)

260 K

50.

Convert the given scientific notation to standard notation: 8.03 X 10 ^-7 cm

a)

0.000 080 3 cm

b)

0.000 000 803 cm

c)

80 300 000cm

d)

8 030 000 000cm

Science 7 Long Quiz

Total questions: 50

Worksheet time: 25mins

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