Physical Science: properties of matter, mixtures, compounds...

The timeline depicting the development of atomic theory BEST illustrates that...

• scientific knowledge is evidence based.

• experimentation can disprove existing theories.

• science is not absolute and theories can be revised.

• 
  peer review is the basis for disproving existing theories.

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Which states of matter have particles that move independently of one another with very little attraction?

• Liquid
• Gas & Plasma

• Solid

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Which picture shows the state of matter with the following characteristics?

- Has a definite, fixed volume
- Has a variable shape
- Particles are constantly moving and sliding by one another

• A

• B

• C

• D

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There have been several proposed atomic models during the last 150 years. Which model best illustrates the Bohr model. This model suggests that an atom's electrons orbit the nucleus in fixed patterns, much like the planets orbit the Sun.

• 
• 
• 
• 

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Which of the diagrams shows the spacing of atoms in a solid?

• B

• C

• A & B

• B & C

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Which diagram shows the spacing of atoms in helium (gas)?

• B

• C

• A

• B & C

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Which of diagrams shows the spacing of atoms in a liquid?

• B

• C

• A

• B & C

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Identify the particle that is NOT a subatomic particle.

• electron

• proton
• neutron
• Deoxyribonucleic acid

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Which object has the lowest density?

• cube 1

• cube 2

• cube 3

• cube 4

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SC.8.P.8.3

You have 10 milliliters of three liquids. Each one is clear and colorless. When all three are put into a container, they separate into three different layers. Which liquid has the highest mass?

• The liquid on the top has the highest mass.

• 
  The liquid on the bottom has the highest mass.

• 
  The liquid in the middle has the highest mass.

• All three have the same mass since they have equal volumes.

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