Introduction to (Bio)Chemistry Quiz

What is the smallest unit of an element that retains the properties of that element?

• Molecule

• Compound

• Atom

• Ion

Which subatomic particle has a positive charge?

• Electron

• Neutron

• Proton

• Ion

What is a substance made of two or more elements chemically combined in a fixed ratio?

• Element

• Compound

• Ion

• Molecule

What type of bond involves the sharing of electron pairs between atoms?

• Ionic Bond

• Covalent Bond

• Hydrogen Bond

• van der Waals forces

What is the term for a charged atom or molecule?

• Isotope

• Ion

• Element

• Compound

Tags

NGSS.MS-PS2-5

What are the three subatomic particles of an atom?

• Protons, Neutrons, Electrons

• Atoms, Molecules, Compounds

• Ions, Isotopes, Elements

• Solids, Liquids, Gases

How are all of the isotopes of an element similar?

• They have the same number of protons.

• They have different chemical properties.

• They have different numbers of electrons.

• They have different atomic numbers.

How can radioactive isotopes be used to date fossils?

• By measuring the decay rate of isotopes.

• By comparing the size of isotopes.

• By observing the color change in isotopes.

• By counting the number of isotopes.

Tags

NGSS.HS-PS1-8

In what ways does a compound differ from its component elements?

• A compound has different properties than its elements.

• A compound is the same as its elements.

• A compound is always a gas.

• A compound is always a liquid.

What are the main types of chemical bonds?

• Ionic and Covalent

• Metallic and Non-metallic

• Solid and Liquid

• Physical and Chemical