7th grade test 1

What is the process of drawing a conclusion based on evidence and reasoning?

• Inference

• Observation

• Hypothesis

• Experiment

What is the smallest unit of a chemical element that retains its chemical properties?

• Atom

• Molecule

• Compound

• Element

What is a pure substance consisting of only one type of atom?

• Element

• Compound

• Mixture

• Solution

What is a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound?

• Molecule

• Atom

• Element

• Compound

What is a change that results in the formation of new chemical substances?

• Chemical Change

• Physical Change

• Phase Change

• State Change

What is the process of deterioration of metals due to chemical reactions with their environment?

• Corrosion

• Oxidation

• Reduction

• Rusting

What is the process of a substance combining with oxygen?

• Oxidation

• Reduction

• Corrosion

• Combustion

What is a solid that forms from a solution during a chemical reaction?

• Precipitate

• Solute

• Solvent

• Residue

What is the substance formed as a result of a chemical reaction?

• Product

• Reactant

• Catalyst

• Inhibitor

What is a substance that takes part in and undergoes change during a reaction?

• Reactant

• Product

• Catalyst

• Inhibitor