Created on 27th April 2025
Grade level: Grade 9th grade
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19 Questions
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Questions (19)
1. Which of the following is a physical change?
Dissolving sugar in water
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2. Which state of matter has a definite shape and volume?
Solid
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3. What happens to the particles in a gas when it is heated?
They move faster and spread apart.
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4. Which of the following is an example of a chemical change?
Digesting food
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5. What is a homogeneous mixture?
A mixture with uniform distribution of components
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6. Which of the following correctly describes plasma?
An ionized gas with free electrons
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7. What is the primary difference between an element and a compound?
Elements are made of one type of atom, while compounds are made of two or more types of atoms.
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8. What is the process called where a solid changes directly to a gas?
Sublimation
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9. Which of the following best describes matter?
Anything that has mass and takes up space
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10. What is matter?
Anything that has mass and occupies space
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11. Which of the following is an example of a physical change?
Melting ice
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12. Which state of matter has a definite shape and volume?
Solid
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13. What happens to the particles in a gas when it is heated?
They move faster and spread apart
4 choice options
14. Which of the following correctly describes a chemical change?
Formation of a new substance
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15. What is the primary characteristic of plasma?
It has no definite shape or volume
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16. What process is used to separate a mixture of liquids with different boiling points?
Distillation
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17. Which of the following describes the arrangement of particles in a liquid?
Close together but can flow past each other
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18. What type of change occurs when water freezes?
Physical change
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19. Which is an example of a homogeneous mixture?
Saltwater
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