What can be changed when balancing equations?
A. Subscripts
B. Coefficients
C. Elements
D. Symbols
B. Coefficients
Matter cannot be created or destroyed according to:
A. Newton
B. Dalton
C. Lavoisier
D. Mendel
C. Lavoisier
The main source of energy in the body is:
A. Protein
B. Lipids
C. Carbohydrates
D. Vitamins
C. Carbohydrates
Which of the following must remain constant in Boyle’s Law?
A. Temperature
B. Volume
C. Pressure
D. Mass
A. Temperature
The basic unit of carbohydrates is:
A. Amino acid
B. Fatty acid
C. Nucleotide
D. Monosaccharide
D. Monosaccharide
The formula for Boyle’s Law is:
A. V₁T₁ = V₂T₂
B. P₁V₁ = P₂V₂
C. P₁T₁ = P₂T₂
D. V₁P₂ = V₂P₁
B. P₁V₁ = P₂V₂
The basic unit of nucleic acids is:
A. Amino acid
B. Glucose
C. Nucleotide
D. Fatty acid
C. Nucleotide
Biomolecules are molecules found in:
A. Rocks
B. Living organisms
C. Metals
D. Plastics
B. Living organisms
Examples of carbohydrates include:
A. Meat
B. Butter
C. Rice
D. Oil
C. Rice
Enumerate the 4 biomolecules.
A gas has a volume of 4 L at 2 atm. What is the pressure if volume becomes 2 L?
A. 1 atm
B. 2 atm
C. 4 atm
D. 8 atm
C. 4 atm
Balanced equations obey the Law of:
A. Motion
B. Gravity
C. Conservation of Mass
D. Energy
C. Conservation of Mass
The left side of a chemical equation shows the:
A. Products
B. Coefficients
C. Reactants
D. Answers
C. Reactants
DNA is a type of:
A. Lipid
B. Carbohydrate
C. Protein
D. Nucleic acid
D. Nucleic acid
Which of the following is a complex carbohydrate?
A. Glucose
B. Fructose
C. Starch
D. Ribose
C. Starch
Heating air inside a hot-air balloon causes it to:
A. Shrink
B. Expand
C. Freeze
D. Condense
B. Expand
A gas occupies 6 L at 300 K. What will its volume be at 150 K (pressure constant)?
A. 3 L
B. 6 L
C. 9 L
D. 12 L
A. 3 L
Which biomolecule is used for long-term energy storage?
Lipids
If pressure doubles, volume becomes:
A. Double
B. Half
C. Four times
D. Zero
B. Half
Which biomolecule stores genetic information?
Nucleic Acids
Balance: Ca + HCl → CaCl₂ + H₂
A. Ca + HCl → CaCl₂ + H₂
B. Ca + 2HCl → CaCl₂ + H₂
C. 2Ca + HCl → CaCl₂ + H₂
D. Ca + HCl₂ → CaCl₂ + H₂
B. Ca + 2HCl → CaCl₂ + H₂
Balance: N₂ + H₂ → NH₃
A. N₂ + H₂ → 2NH₃
B. N₂ + 3H₂ → 2NH₃
C. 2N₂ + H₂ → NH₃
D. N₂ + 2H₂ → NH₃
B. N₂ + 3H₂ → 2NH₃
Balance: Al + O₂ → Al₂O₃
A. 2Al + O₂ → Al₂O₃
B. 2Al + 2O₂ → Al₂O₃
C. Al + 3O₂ → Al₂O₃
D. 4Al + 3O₂ → 2Al₂O₃
D. 4Al + 3O₂ → 2Al₂O₃
If P₁ = 3 atm, V₁ = 6 L, V₂ = 3 L, what is P₂?
A. 3 atm
B. 6 atm
C. 9 atm
D. 12 atm
B. 6 atm
Balance: ___ Mg + ___ O₂ → ___ MgO
2, 1, 2