Chemical Interactions Review

Atomic Structure: What is the smallest unit of matter that retains the properties of an element?

• Molecule

• Atom

• Cell

• Particle

Element Representation: In the model of an element, the atomic number represents:

• Number of protons

• Number of neutrons

• Number of electrons

• Atomic mass

Periodic Table: The vertical columns on the periodic table are called:

• Groups

• Periods

• Families

• Sections

Periodic Table: The horizontal rows on the periodic table are called:

• Groups

• Periods

• Families

• Sections

Periodic Table: Where are metals generally located on the periodic table?

• Left side

• Right side

• Middle

• Top

Chemical Bonds: In an ionic bond, what is transferred between atoms?

• Electrons

• Protons

• Neutrons

• Photons

Chemical Equations: In a chemical equation, what are the substances to the left of the arrow?

• Products

• Reactants

• Coefficients

• Subscripts

Chemical Equations: What does it mean if a chemical equation is balanced?

• It obeys the law of conservation of mass

• It has equal numbers of reactants and products

• It is reversible

• It contains only metals

Chemical Reactions: What is a substance formed in a chemical reaction that is insoluble and becomes a solid?

• Precipitate

• Catalyst

• Solvent

• Solute

Chemical Equations: Which of the following is a balanced chemical equation for the reaction: Hydrogen + Oxygen → Water?

• H2 + O2 → H2O

• 2H2 + O2 → 2H2O

• H2 + 2O2 → 2H2O

• H2O → H2 + O2