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Chemistry Questions - All Grades

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The Chemistry questions below are in the following grade levels:
Grades: 1 2 3 4 5 6 7 8 9 10 11 12 College Graduate Continuing Education
1 2 3 4 ... 207 next page
Grade 2 :: Properties of Matter by MrAdams
Grade 6 :: Properties of Matter by Qalam
Density is defined as                                        .
  1. the shape of a certain mass
  2. the amount of volume to a certain shape
  3. the amount of mass in a given volume
  4. the length of a certain mass
Grade 5 :: Properties of Matter by Christina564
Grade 9 :: Biochemistry by LBeth
[math]C_6H_12O_6 + 6O_2->6CO_2+6H_2O+en ergy [/math] is the balanced chemical equation for
  1. photosynthesis
  2. glycolysis
  3. cellular respiration
  4. Krebs cycle
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 :: 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 2 :: Properties of Matter by viboni
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 :: 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 :: Bonds and Mixing by doliver701
Compare and contrast mixtures and compounds. Which statement is true about mixtures and
  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 6 :: Properties of Matter by Qalam
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
College :: Thermodynamics by teachchemistry
Which of the following can be used to calculate entropy changes in reactions?
  1. [math]∆Gº_{reaction}=∑n_{r}∆Gº_f{"reactants"}-∑n_{p}∆Gº_f{"products"}[/math]
  2. [math]∆Gº_{reaction}=∑n_{r}∆Gº_f{"reactants"}+∑n_{p}∆Gº_f{"products"}[/math]
  3. [math]∆Gº_{reaction}=∑n_{p}∆Gº_f{"products"}-∑n_{r}∆Gº_f{"reactants"}[/math]
  4. None of the above
College :: Thermodynamics by teachchemistry
Which of the following represents ∆Gº, in terms of temperature?
  1. [math]∆Gº=∆Hº+T∆Sº[/math]
  2. [math]∆Gº=∆Hº-T∆Sº[/math]
  3. [math]∆Gº=∆Hº-T/{∆Sº}[/math]
  4. [math]∆Gº=-∆Hº-T∆Sº[/math]
College :: Thermodynamics by teachchemistry
Which of the following correctly represents when the equilibrium point occurs?
  1. When the value of ∆Gº=1, only
  2. When the value of ∆Gº<0, only
  3. When the value of ∆Gº>0, only
  4. At the lowest value of free energy available to the system
Grade 5 :: Biochemistry by jsnell
Photosynthesis produces:
  1. oxygen and glucose
  2. water and sugar
  3. oxygen and proteins
Grade 9 :: Bonds and Mixing by der1228
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