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- 1. Multiple Choice
Identify the product(s) in the following word equation:
sodium reacts with chlorine to yield sodium chloride
Sodium
Sodium chloride
Sodium and Chlorine
Sodium and sodium chloride
- 2. Multiple Choice
Which statement is TRUE of reactants in a chemical reaction?
You write them on the right-hand side of the arrow.
They are what get produced in a chemical reaction.
They always stay the same.
Are the substances that you start with.
- 3. Multiple Choice
What are the new substances that are formed in a chemical reaction called?
Reactants
Atoms
Products
Reagents
- 4. Multiple Choice
What state of matter is this substance?
solid
liquid
gas
aqueous
- 5. Multiple Choice
What state of matter is this substance?
solid precipitate
dissolved in water
released as a gas
liquid
- 6. Multiple Choice
According to the chemical equation, which compound would form a precipitate?
Co(NO3)2
NaOH
NaNO3
Co(OH)2
- 7. Multiple Choice
What does the symbol inside the circle mean?
"yields, or produces"
"dissolved in water"
"forms a precipitate"
"released as a gas"
- 8. Multiple Choice
Which of the following statements is TRUE?
A molecule is smaller than an atom.
A molecule is made of atoms.
Molecules are found inside of atoms.
- 9. Multiple Choice
Which of the following statements about atoms is TRUE?
An atom is a blob of gelatinous goo.
An atom is bigger than a molecule.
An atom is made of many molecules.
An atom is a basic piece of matter.
- 10. Multiple Choice
Which of the following symbols represents a compound?
Co
Br
Fe
CO
- 11. Multiple Choice
Which of the following symbols shows only ONE element?
CU
Ar
KF
WO
- 12. Multiple Choice
What does the symbol CaCO3 represent?
An element
A compound
An atom
None of the above
- 13. Multiple Choice
Which of these is NOT the correct way to read the symbol in a chemical equation?
(g) = grams
(aq) = solution
(s) = solid
(l) = liquid
- 14. Multiple Choice
Which of the following chemical equations is correct for the word equation:
Solid magnesium is burned in oxygen gas to produce solid magnesium oxide.
Mg + O2→ MgO (aq)
Mg+ O→ MgO (s)
Mg + CO2 → MgO (s) + C
Mg + O2→ MgO (s)
- 15. Multiple Choice
Solid sodium reacts with chlorine gas to produce sodium chloride crystals.
NaCl (s)→ Cl(g) + Na(s)
Na (s)+ CO2 (g)→ NaCO2 (s)
Na (s) + Cl2 (g)→ NaCl (s)
Na (g) + Cl (s) → NaCl (s)
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