GRADE 8 " ANG SCI-YEAH GAME"

1. Which of the following states of matter has a definite volume but has no definite shape?

• Gas

• Liquid

• Plasma

• Solid

2. What similarities do you observe from the given samples?

Nitrogen, Gold, Oxygen, and Mercury?

• All samples are compounds.

• All samples are elements.

• All samples are gases.

• All samples are solids.

3.     Matter is anything that occupy space and has mass. Which of the following is NOT classified as matter?

• Heat

• Smoke

• Soil

• Water

4. A small amount of salt was poured into water and stirred thoroughly to mix it evenly in water. What do you call the resulting liquid?

• Element

• Compound

• Chemical Change

• Homogenous Mixture

5. Physical Changes involve states of matter and energy. No new substance is created during a physical change.

The following are examples of physical change except______.

• crushing a can

• breaking a glass

• cutting of paper

• burning a log of wood

6. The month of March is fire prevention month. Burning light material such as wood is one of the leading cause of fire. Determine the evidence of chemical change in burning of wood.

• Drastic change of size.

• Change of volume.

• Formation of a new shape.

• Appearance of new substance.

7. What phase change is illustrated in the figure?

• Condensation

• Evaporation

• Freezing

• Melting

8.  A phase change is a physical process in which a substance goes from one phase to another. When does phase change occur?

• Heat is added to or removed from the substance.

• A substance is combined with another substance.

• Particles of the substance maintain their kinetic energy.

• Particles of the substance are not changing their motion.

9. If the atomic number of a neutral atom is 20, how many protons are there in its nucleus?

• 0

• 10

• 20

• 40

10. How many protons of aluminum ion (Al⁺³) are present if its atomic number is 13?

• 12

• 13

• 14

• 15