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Eighth Grade (Grade 8) Chemistry Questions

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Grade 8 :: Properties of Matter by csantana
Which of the following is a physical property of an element?
  1. color
  2. ability to rust
  3. ability to burn
  4. ability to tarnish
Grade 8 :: Properties of Matter by erogers
Grade 8 :: Properties of Matter by csantana
Grade 8 :: Matter by CaryBloomquist
A gas has
  1. a definite shape and volume.
  2. a definite shape, but no definite volume.
  3. no definite shape or volume.
  4. no definite shape, but a definite volume.
Grade 8 :: Acids and Bases by aswindell
Which of the following are examples of acids?
  1. vinegar
  2. ammonia
  3. vitamin c
  4. alcohol
  5. oranges
  6. car batteries
  7. baking soda
  8. blood
Grade 8 :: Properties of Matter by CaryBloomquist
Hardness, temperature, color, size, and smoothness are all
  1. states of matter
  2. physical properties of matter
  3. chemical properties of matter
  4. used to describe elements but not compounds
Grade 8 :: Biochemistry by rebmidwife
The process where cells obtain energy from sugar molecules is called:
  1. biotic
  2. nitrogen cycle
  3. respiration
  4. food chains
Grade 8 :: Reactions by doliver701
Lucy noticed that her coin collection had begun to tarnish. Some of the metal in the coins had begun to change color. The formation of tarnish is most similar to which of the following changes?
  1. shredding a piece of paper into hundreds of tiny strips
  2. dropping a dinner plate on the floor
  3. melting ice cubes in a glass of juice
  4. burning a piece of paper to ashes in a fireplace
Grade 8 :: Properties of Matter by erogers
Ductility is the ability for metal to be
  1. rolled into sheets
  2. pulled into wires
  3. pressed into angles
  4. melted into molds
Grade 8 :: Bonds and Mixing by doliver701
Compare and contrast mixtures and compounds. Which statement is true about mixtures and
compounds?
.
  1. Both mixtures and compounds are the same throughout.
  2. Mixtures and compounds are made of two or more elements in a definite proportion.
  3. Mixtures must be separated by chemical methods and compounds by physical methods.
  4. Mixtures contain two or more elements physically combined and compounds contain two or more elements chemically combined.
Grade 8 :: Properties of Matter by csantana
Matter is made up of small particles. Which of the following correctly lists the particles of matter from the SMALLEST to the LARGEST?
  1. cells, molecules, atoms
  2. atoms, cells, molecules
  3. molecules, atoms, cells
  4. atoms, molecules, cells
Grade 8 :: Matter by CaryBloomquist
Sublimation is a change from a
  1. solid to a liquid.
  2. gas to a liquid
  3. solid to a gas
  4. liquid to a solid
Grade 8 :: Properties of Matter by csantana
Grade 8 :: Periodic Table and Elements by erogers
A good conductor of electricity is
  1. copper
  2. hydrogen
  3. chloride
  4. neon
Grade 8 :: Bonds and Mixing by erogers
What holds sodium chloride crystals together?
  1. covalent bonds
  2. ionic bonds
  3. a sea of electrons
  4. metallic bonds
Grade 8 :: Bonds and Mixing by erogers
Grade 8 :: Bonds and Mixing by erogers
[math]MgF_2[/math] is an example of a
  1. Ionic bond
  2. Metallic bond
  3. Covalent bond
  4. Noble bond
Grade 8 :: Bonds and Mixing by erogers
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