The Basic Chemistry of Carbon

Matter is neither created nor destroyed, but it can be ________.

• transformed

• multiplied

• evaporated

• destroyed

What does a chemical reaction mean?

• Atoms disappear when they are combined with a larger atom

• New molecules are formed when atoms make or break their bonds with other atoms

• Atoms remain unchanged

• A substance dissolves in another substance and cannot be returned to its original form

Photosynthesis is a chemical reaction that captures the sun’s energy to fuel life on Earth.

• True

• False

Which of the following is NOT involved in the light reaction of photosynthesis?

• H2O

• O2

• CO2

• Light

The Calvin Cycle in photosynthesis uses ______ to produce sugar.

• CO2

• O2

• H2O

• Light

What do biogeochemical cycles, also known as nutrient cycles, describe?

• The movement of animals across continents

• The movement of chemical elements through the four spheres of Earth

• The formation of rocks in the geosphere through heat or pressure

• How the process of photosynthesis creates energy

Which of the following are the four spheres of Earth through which chemical elements move in biogeochemical cycles?

• Atmosphere, biosphere, hydrosphere, geosphere

• Lithosphere, stratosphere, mesosphere, thermosphere

• Troposphere, exosphere, lithosphere, hydrosphere

• Biosphere, lithosphere, hydrosphere, exosphere

Nutrient cycles describe the movement of which atoms?

• Oxygen, hydrogen, sulfur

• Carbon (C), nitrogen (N), phosphorus (P)

• Iron, calcium, sodium

• Helium, neon, argon

Match the prefix or root with its meaning:

• substance/matter

• chemical

• life

• bio

• earth

• geo

The Latin word 'nutrire' means to nourish, to feed, to nurse, to foster, to support, to ________.

• preserve

• destroy

• ignore

• abandon