First Quarterly Examination For Science 7

1. What are the elements found in water?

Calcium and Nitrogen

Carbon and Helium

Hydrogen and Carbon

Hydrogen and Oxygen

2. An acidic mixture has a pH that is less than ____.

7

9

10

8

3. These refer to the list of the different nutrients provided by the food product with their corresponding percentage share on the daily recommended dietary allowance.

Ingredients

Nutrition facts

Recipes

Procedures

4. The component present in small amount in the solution.

Particle

Concentrates

Solvent

Solute

5. What kind of mixtures that has a uniform composition and appearance all throughout?

Heterogeneous mixture

Composite mixture

Homogenous mixture

Concrete mixture

6. A dye that changes into a specific color depending on whether it is placed in an acidic solution or in a basic one.

PH scale

Indicator

Sodium hydroxide

Acidicity

7. They are elements exhibiting properties that are intermediate to metals and nonmetals. What are they?

Oxides

Metals

Non metals

Metalloids

8. Which of the following is a substance?

Ice candy

Nova snack

Distilled water

Ice cream

9. Soap has a pH value of 8 to 9. What is it? Basic mixture

Acidic mixture

Dilute solution

Basic mixture

Concentrated solution

10. Acids and bases with high concentrations can cause _______.

Happiness

Sweetness

Serious burns

Good eye sight

11. The solution that contains the maximum amount of solute dissolved by a given amount of solvent.

Unsaturated solution

Solvent

Solute

Saturated solution

12. A liquid has the following properties: one-phase, colorless, boils atvarying temperature. Which of the following BEST describes theliquid?

Substance

Solution

Suspension

Coarse mixture

13. Which statement describes the solute?

It is the solid formed in solution.

It is the liquid part of the solution.

It is the component of a solution in smaller amount.

It is the component of a solution in bigger amount.

14. Arrange the following household items: toothpaste, bath soap, tap water,vinegar from the most acidic to most basic?

Tap water, milk, toothpaste, vinegar

Milk, tap water, vinegar, toothpaste

Toothpaste, milk, tap water, vinegar

Vinegar, tap water, milk, toothpaste

15. When it contains less solute than the maximum amount it can dissolve at a given temperature, it is called ______ solution.

Saturated

Unsaturated

Homogeneous

Concentrated

16. The list of the materials that have been added to make the food product. These materials are the sources of the nutrients. These are the ones that are taken in by the body.

Nutrition Facts

Minerals

Menu

Ingredients

17. This refers the relative amounts of solute and solvent in a given volume of solution.

Solubility

Concentration

Molality

Solution

18. It has a small amount of dissolved solute in comparison to the amount of solvent.

Saturated solution

Concentrated solution

Dilute solution

Molarity

19. A chemical decomposition reaction produced by passing an electric current through a solution containing ions.

Distillation

Electrolysis

Evaporation

Condensation

20. The property of metal that allows electricity to pass through a material.

Electrical conductivity

Ductile

Magnetic

Luster

21. How many mL of ethyl alcohol are present in a 50 mL bottle of rubbing alcohol?

35 mL

40 mL

15 mL

20 mL

22. A substance consisting of two or more substances mixed together.

Element

Compound

Mixture

Substance

23. Calcium chloride is a compound of the two elements calcium andchlorine. Which of the following statements is TRUE?

Calcium chloride is listed in the periodic table

The symbol for calcium chloride includes Ca and Cl

Chlorine may still be broken down into a simpler form.

Calcium and chlorine belong to the same group in the periodic table.

24. A substance formed by chemical union of two or more elements or ingredients in definite proportion by weight.

Element

Mixture

Acid

Compound

25. You were tasked to check if the liquid sample you have is a substanceor a mixture. Which among these tests is the BEST way to do so?I. Color comparisonII. Taste comparisonIII. Boiling testIV. Melting test

I, II, III and IV

I, II and III only

I, II and IV only

III and IV only

26. Which of the following elements is most likely ductile at roomtemperature?

Sulfur

Mercury

Nitrogen

Aluminum

27. In a compound Iron phyrophates, which element can be found to this compound aside from Iron and Oxygen?

Calcium

Sulfur

Phosphorus

Helium

28. Which of the following is an example of a solution?

Vinegar

Ice cream

Mud in water

Oil mixed in soy sauce

29. What property of metal that identify a metal based on its appearance

Luster

Ductile

Magnetic

Conduct electricity

30. This refers to any compound of oxygen with another element or a radical.

Oxide

Halide

Halogen

Metal

31. Who proposed the pH scale used to determine the acidity and basicity of the solution?

Soren Peter Lauritz Sorensen

Albert Einstein

Aristotle

Charles Darwin

32. The process of purifying a liquid by boiling it and condensing its vapors.

Distillation

Condensation

None of these

Evaporation

33. During boiling, the temperature of a changes at the start then it becomes the same; while the temperature of a is different at different times

Atom; element

Mixture;Substance

Substance; Mixture

Base; Acid

34. During melting, a substance melts ____within a short time; while a mixture has portions that seem to be not _.

Successfully; cooled

Completely; Melting

Temporarily;Melting

Successfully; Melting

35. The following are the examples of naturally occuring solution except;

Ocean

Wine

Air

Blood

36. Which element is gaseous at room temperature?

Mercury

Nitrogen

Carbon

Calcium

37. Jill has an unopened box of a 2-meter foil labeled 100% made of aluminum. Aluminum is a substance. Jill takes just a thumb-size piece of the aluminum foil. Which of the following statements is TRUE about the piece of aluminum foil that Jill took compared with the rest that was left in the box

The mass is the same but the melting behavior is different.

The mass is different but the melting behavior is the same.

Its mass and melting behavior are the same.

Its mass and melting behavior are different.

38. Would it be possible to have a mixture made of all carbon atoms and compounds with only carbon atoms?

Yes

No

Maybe

No idea

39. The following are the characteristics of solution except:

It is a homogeneous mixture.

The solute cannot be separated from the solvent through filtration.

The solute can be separated by any means.

A solution is often clear and transparent.

40. Which of the following affect how fast a solid solute dissolves except?

Freezing

Stirring

Temperature

Particle size

41. Which of the household products is a base?

Vinegar

Bleach

Milk

Rainwater

42. Describe the above picture

Concentrated

Dilute

Saturated

Unsaturated

43. Which of the following statements is TRUE?

Water is composed of more than two elements.

Compounds are more complex than elements.

Compounds are made up of one kind of element.

Ferrous sulfate cannot be broken down into simpler substances.

44. The property of metal that can be hammered or rolled into thin sheets without breaking the metal.

Luster

Malleable

Ductile

Magnetic

First Quarterly Examination For Science 7

1. What are the elements found in water?

2.

What first name or nickname would you like us to use?

2. An acidic mixture has a pH that is less than ____.

3. These refer to the list of the different nutrients provided by the food product with their corresponding percentage share on the daily recommended dietary allowance.

4. The component present in small amount in the solution.

5. What kind of mixtures that has a uniform composition and appearance all throughout?

6. A dye that changes into a specific color depending on whether it is placed in an acidic solution or in a basic one.

7. They are elements exhibiting properties that are intermediate to metals and nonmetals. What are they?

8. Which of the following is a substance?

9. Soap has a pH value of 8 to 9. What is it? Basic mixture

10. Acids and bases with high concentrations can cause _______.

11. The solution that contains the maximum amount of solute dissolved by a given amount of solvent.

12. A liquid has the following properties: one-phase, colorless, boils atvarying temperature. Which of the following BEST describes theliquid?

13. Which statement describes the solute?

14. Arrange the following household items: toothpaste, bath soap, tap water,vinegar from the most acidic to most basic?

15. When it contains less solute than the maximum amount it can dissolve at a given temperature, it is called ______ solution.

16. The list of the materials that have been added to make the food product. These materials are the sources of the nutrients. These are the ones that are taken in by the body.

17. This refers the relative amounts of solute and solvent in a given volume of solution.

18. It has a small amount of dissolved solute in comparison to the amount of solvent.

19. A chemical decomposition reaction produced by passing an electric current through a solution containing ions.

20. The property of metal that allows electricity to pass through a material.

21. How many mL of ethyl alcohol are present in a 50 mL bottle of rubbing alcohol?

22. A substance consisting of two or more substances mixed together.

23. Calcium chloride is a compound of the two elements calcium andchlorine. Which of the following statements is TRUE?

24. A substance formed by chemical union of two or more elements or ingredients in definite proportion by weight.

25. You were tasked to check if the liquid sample you have is a substanceor a mixture. Which among these tests is the BEST way to do so?I. Color comparisonII. Taste comparisonIII. Boiling testIV. Melting test

26. Which of the following elements is most likely ductile at roomtemperature?

27. In a compound Iron phyrophates, which element can be found to this compound aside from Iron and Oxygen?

28. Which of the following is an example of a solution?

29. What property of metal that identify a metal based on its appearance

30. This refers to any compound of oxygen with another element or a radical.

31. Who proposed the pH scale used to determine the acidity and basicity of the solution?

32. The process of purifying a liquid by boiling it and condensing its vapors.

33. During boiling, the temperature of a __________ changes at the start then it becomes the same; while the temperature of a __________ is different at different times

34. During melting, a substance melts ________within a short time; while a mixture has portions that seem to be not _____.

35. The following are the examples of naturally occuring solution except;

36. Which element is gaseous at room temperature?

37. Jill has an unopened box of a 2-meter foil labeled 100% made of aluminum. Aluminum is a substance. Jill takes just a thumb-size piece of the aluminum foil. Which of the following statements is TRUE about the piece of aluminum foil that Jill took compared with the rest that was left in the box

38. Would it be possible to have a mixture made of all carbon atoms and compounds with only carbon atoms?

39. The following are the characteristics of solution except:

40. Which of the following affect how fast a solid solute dissolves except?

41. Which of the household products is a base?

42. Describe the above picture

43. Which of the following statements is TRUE?

44. The property of metal that can be hammered or rolled into thin sheets without breaking the metal.

33. During boiling, the temperature of a changes at the start then it becomes the same; while the temperature of a is different at different times

34. During melting, a substance melts ____within a short time; while a mixture has portions that seem to be not _.