- 1. An ___________ is the smallest unit of an element that has the properties of that element.
A) atom
B) molecule
C) chemical property
D) physical change
- 2. An element is a substance made up of several kinds of atoms.
A) true
B) false
- 3. A _________________ is a change that DOES NOT result in a new substance.
A) physical change
B) positive change
C) chemical change
D) neutral change
- 4. All matter is made up of atoms.
A) false
B) true
- 5. A _______________ is a group of two or more atoms that are joined chemically.
A) molecule
B) team
C) solvent
D) salt atom
- 6. A substance that has a definite size and shape is called a ...
A) solid
B) liquid
C) plasma
D) gas
- 7. A mixture is is two or more substances that are combined without being changed
A) true
B) false
- 8. RUSTING is an example of a __________ change.
A) thermal
B) static
C) chemical
D) physical
- 9. Ice cream melting is a chemical change
A) false
B) true
- 10. How is a mixture different from a compound?
A) A compound is easier to separate than a mixture.
B) A mixture has a chemical formula, compounds do not.
C) A mixture forms from a chemical reaction, a compound does not.
D) Substances in a compound are chemically combined. The substances in a mixture are not.
- 11. Sand is dropped into a beaker of iron filings. This is an example of a(n)
A) electrolysis
B) mixture
C) element
D) compound
- 12. Carbon Dioxide (CO2) is formed when the following two substances are mixed together.
A) baking soda and water
B) sugar and water
C) milk and vinegar
D) baking soda and vinegar
- 13. Changes in the state of matter are chemical changes
A) false
B) true
- 14. This particle is found in the nucleus and has no charge
A) atom
B) neutron
C) electron
D) proton
- 15. Bubbling is a sign of a chemical change
A) true
B) false
- 16. ___________ paper is used to test the pH of a liquid
A) news
B) tissue
C) colored
D) litmus
- 17. Any object or anything that takes up space and has mass is called
A) atoms
B) stuff
C) matter
D) gas
- 18. An example of a gas is ...
A) pencils
B) chocolate syrup
C) helium
D) a rock
- 19. Baking a cake is a ___________ type of change
A) physical
B) atomic
C) state
D) chemical
- 20. When you put a solid into a liquid, stir and the solid dissolves, you have created a ...
A) molecule
B) mixture
C) solvent
D) solution
- 21. If you rip a piece of construction paper, you are creating a _________ change
- 22. Ice is the form of water that the particles move the _____________
A) randomly
B) up and down
C) slowest
D) fastest
- 23. When you put iced tea crystals into a solvent (water) you create a ...
A) a yummy drink
B) mixture
C) solution
D) solute
- 24. The positively charged component of a nucleus is called the ...
A) electron
B) proton
C) neutron
D) static particle
- 25. Burning a match is an example of a ____________
A) physical property
B) physical change
C) chemical property
D) chemical change
- 26. Particles in this state can flow, adopt the shape of the container and bump into each other often
A) plasma
B) solid
C) liquid
D) gas
- 27. When a liquid changes into a gas it is called ...
A) evaporation
B) migration
C) condensation
D) transpiration
- 28. Water is different from most liquids because of its ...
A) wetness
B) surface tension
C) flow rate
D) color
- 29. To separate a mixture of paper clips and sand, you should use
A) distillation
B) wind separation
C) magnetic separation
D) decanting
- 30. Chemical changes are generally ...
A) irreversible
B) noisy
C) recognizable by an increase in volume
D) reversible
- 31. What are the four signs that a chemical reaction has occurred? (4 marks)
- 32. You are assigned the task of quickly dissolving a vitamin tablet in water. What would you do? (3 marks)
- 33. What are three ways to tell the difference between an acid and a base? (3 marks)
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