Free Printable Atoms and Chemical Reactions Quiz

1.

What do atoms connected by covalent bonds share?

a)

hydrogen ions

b)

ionic compounds

c)

pairs of electrons

d)

carbon and oxygen

2.

The diagram shows the particles that make up an atom. What is the name of the negatively charged particles shown in this model of an atom?

a)

prions

b)

protons

c)

neutrons

d)

electrons

3.

From the information that two atoms have two different proton counts, you can conclude that the atoms __________.

a)

belong to two entirely different elements

b)

represent different isotopes of one element

c)

are likely to react violently with each other

d)

might be different ions of the same element

4.

The diagram shows both a chemical change and a physical change. Which statement is supported by the diagram?

a)

Atoms of most elements become less stable when they bind to form compounds.

b)

Compounds can most easily form between elements that have full outer energy levels.

c)

Compounds can have different properties than the elements that make up the compound.

d)

Two elements will always combine in the same ratios when they react to form a compound.

5.

ATP (adenosine triphosphate) stores energy in the bonds between its __________.

a)

nucleotides

b)

carbon atoms

c)

hydrogen atoms

d)

phosphate groups

6.

What do light-independent reactions of photosynthesis need?

a)

water

b)

oxygen

c)

cellulose

d)

carbon dioxide

7.

Which of these is the site of the photosystems in the light-dependent reactions of photosynthesis?

a)

stroma

b)

ATP synthase

c)

thylakoid membrane

d)

mitochondrial matrix

8.

Which chemical equation best represents the process of photosynthesis?

a)

6CO2 + 6H2O → C6H12O6 + 6O2

b)

C6H12O6 + 6O2→ 6CO2 + 6H2O

c)

C6H12O6 + 6H2O → C6H12O6 + 6O2

d)

6CO2 + O2 → C6H12O6 + 6O2 + H2O

9.

Which statement accurately describes the graph?

a)

Reaction 2 occurs faster than Reaction 3 because Reaction 2 requires more energy than Reaction 3.

b)

Product B contains more energy at the end of the reaction than reactant A has at the beginning of the reaction.

c)

Reactant A contains more energy at the beginning of the reaction than product C has at the end of the reaction.

d)

The data plotted for Reaction 2 and Reaction 3 indicate a difference in the activation energy of these reactions.

10.

Reaction 3 in the graph __________.

a)

is slower than Reaction 2

b)

is the same as Reaction 1 but faster

c)

probably occurred in the presence of an enzyme

d)

requires more activation energy than Reaction 2

11.

The diagram shows a process in living organisms. Identify the process shown in the diagram and explain why it is important to living organisms.

a)

The process of photosynthesis. It is important to all iiving organisms because it provides chemical energy that can be used by cells.

b)

The process of cellular respiration. It is important to all iiving organisms because it provides chemical energy that can be used by cells.

c)

The process of photosynthesis. It is important to all iiving organisms because it provides light energy that can be used by cells.

d)

The process of cellular respiration. It is important to all iiving organisms because it provides light energy that can be used by cells.

12.

Think about photosynthesis and cellular respiration. Identify what form carbon takes after the light-dependent reactions of photosynthesis and after cellular respiration.

a)

After the light DEPENDENT reatcions of photosynthesis, carbon is still in the CARBON DIOXIDE from. After cellular respiration, carbon is in CARBON DIOXIDE molecules.

b)

After the light INDEPENDENT reatcions of photosynthesis, carbon is still in the CARBON DIOXIDE form. After cellular respiration, carbon is in CARBON DIOXIDE molecules.

c)

After the light DEPENDENT reatcions of photosynthesis, carbon is still in the GLUCOSE from. After cellular respiration, carbon is in GLUCOSE molecules.

d)

After the light DEPENDENT reatcions of photosynthesis, carbon is still in the GLUCOSE from. After cellular respiration, carbon is in GLUCOSE molecules.

13.

All living things are made of carbon-based molecules. These molecules have different structures and functions. Explain how the atomic structure and covalent bonding properties of carbon atoms allow carbon to form many different types of molecules with many different functions. In your answer: Define covalent bond.

a)

two atoms share at least one pair of electrons

b)

3 atoms share one pair of electrons

c)

two atoms share 5 pairs of electrons

14.

All living things are made of carbon-based molecules. These molecules have different structures and functions. Explain how the atomic structure and covalent bonding properties of carbon atoms allow carbon to form many different types of molecules with many different functions. In your answer: Explain how carbon-based rings and chains can form very large molecules.

a)

Carbon can form covalent bonds with up to 4 other atoms, including other carbon atoms, to form rings an dchains of molecules. These rings and chains are bond with each other to form very large molecules.

b)

Carbon can form covalent bonds with up to 8 other atoms, including other carbon atoms, to form rings an dchains of molecules. These rings and chains are bond with each other to form very large molecules.

c)

Carbon can form covalent bonds with up to 2 other atoms, including other carbon atoms, to form rings an dchains of molecules. These rings and chains are bond with each other to form very large molecules.

d)

Carbon can form covalent bonds with up to 1 other atom including another carbon atom, to form rings an dchains of molecules. These rings and chains are bond with each other to form very large molecules.

15.

All living things are made of carbon-based molecules. These molecules have different structures and functions. Explain how the atomic structure and covalent bonding properties of carbon atoms allow carbon to form many different types of molecules with many different functions. In your answer: Choose the four main types of carbon-based molecules in organisms and the description of one of their functions.

a)

Carbohydrates that can be broken down to make usuable energy.

b)

Lipids can be used to form strucures

c)

Proteins can be used as enzymes (speed up reactions)

d)

nucleic acids store genetic information

16.

What are the two reactants and two products for the process of photosynthesis?

a)

water

b)

carbon dioxide

c)

glucose (sugars)

d)

oxygen

17.

Explain the importance of producers and photosynthesis for all life on Earth.

a)

produce the source of chemical energy

b)

produce carbon dioxide for animals

c)

produce sunlight

d)

produce water

18.

The chemical formula for photosynthesis: (a) + (b) + (c) → (d) + (e)

Choose from the below words

CO2

H20

sunlight

C6H12O6

O2

19.

Which of the following best describes the role of enzymes in biological reactions?

a)

Enzymes increase the activation energy required for reactions.

b)

Enzymes decrease the activation energy required for reactions.

c)

Enzymes are consumed in the reactions they catalyze.

d)

Enzymes are only active at high temperatures.

20.

What is the primary function of chlorophyll in photosynthesis?

a)

To absorb carbon dioxide

b)

To absorb sunlight

c)

To release oxygen

d)

To produce glucose

Atoms and Chemical Reactions Quiz

Total questions: 20

Worksheet time: 12mins

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