Chemistry Quiz

What is an atom?

• The smallest unit of a compound

• The smallest particle of an element, made of electrons, protons, and neutrons

• A type of molecule

• A chemical bond between elements

What is chemical energy?

• Energy produced by electrical circuits

• Energy stored in chemical bonds and released through chemical reactions

• Energy emitted by the sun

• Energy generated by physical movement

What is a chemical reaction?

• The process by which one or more substances change to produce one or more different substances

• The physical combination of two substances to form a mixture

• The process of boiling a liquid to produce a gas

• The change in color of a substance when exposed to sunlight

What is glucose primarily composed of?

• Five carbon atoms and one oxygen atom

• Six oxygen atoms

• Six carbon atoms

• Six hydrogen atoms

What is the preferred energy source for most cells?

• Protein

• Glucose

• Fatty acids

• Nucleic acids

Glucose is produced by which of the following processes?

• Cellular respiration

• Photosynthesis

• Fermentation

• Glycolysis

What is the simplest unit of a chemical compound that can exist, formed when two or more atoms join together chemically?

• Atom

• Element

• Molecule

• Compound

What is photosynthesis?

• A process by which animals convert oxygen into carbon dioxide

• A chemical reaction during which plants convert radiant energy from the Sun to chemical energy; the reaction converts carbon dioxide and water into sugar (glucose) and oxygen

• A physical change in which water evaporates into the atmosphere

• A biological process where plants absorb water through their roots

What are the raw materials used by plants in the process of photosynthesis?

• Oxygen and sugar

• Nitrogen and phosphorus

• Carbon dioxide and water

• Hydrogen and oxygen

What are the products of photosynthesis?

• Carbon dioxide and water

• Sugar (glucose) and oxygen

• Nitrogen and sulfur

• Hydrogen and methane