NW Final - Physical Science

What is the term for an individual particle of an element?

• Molecule

• Atom

• Compound

• Mixture

What is the temperature at which a substance changes from a liquid to a gas called?

• Melting point

• Freezing point

• Boiling point

• Condensation point

What is a chemical bond?

• The connection between atoms in more complex particles

• The process of changing from a gas to a liquid

• The mass of a single atom

• The temperature at which a substance changes from a liquid to a gas

What is a chemical reaction?

• A shorthand notation made up of arrows and chemical formulas

• A process in which one or more new substances form from one or more other substances

• A type of test that medical scientists perform to assess a medicine's effectiveness

• A limitation on the range of possible solutions to a design problem

What is the term for a chemical reaction that absorbs more energy from the surroundings than it releases?

• Exothermic reaction

• Endothermic reaction

• Evaporation

• Condensation

Which state of matter has atoms or molecules that are completely separated from one another by empty space and can move around independently?

• Solid

• Liquid

• Gas

• Plasma

What is the scientific law stating that matter cannot be created or destroyed?

• Law of conservation of matter

• Scientific law

• Periodic table of the elements

• Macroscopic

What is the term for the temperature at which a substance changes from a solid to a liquid as thermal energy is added to it?

• Boiling point

• Freezing point

• Melting point

• Sublimation point

What is the term for a table that lists all of the known elements and groups them into columns by important shared properties?

• Scientific law

• Periodic table of the elements

• Prototype

• Model

What is the term for a new substance that forms during a chemical reaction?

• Reactant

• Product

• Prototype

• Model