Science Quiz

What is the basic unit of matter?

• Molecule

• Atom

• Compound

• Element

Tags

NGSS.MS-PS1-1

Which term describes a well-tested explanation that unifies a broad range of observations?

• Hypothesis

• Theory

• Experiment

• Conclusion

What is the smallest unit of most compounds that displays all the properties of that compound?

• Atom

• Molecule

• Ion

• Electron

Tags

NGSS.MS-PS1-1

What is a solution?

• A type of mixture in which all components are evenly distributed

• A substance that is dissolved in a solution

• A mixture of water and nondissolved material

• A compound that forms hydrogen ions in a solution

What is the role of a solvent in a solution?

• It is a substance that is dissolved in a solution

• It is a dissolving substance in a solution

• It is a mixture of water and nondissolved material

• It is a compound that produces hydroxide ions in solution

What does the pH scale measure?

• The concentration of solute in a solution

• The concentration of hydrogen ions in a solution

• The concentration of solvent in a solution

• The concentration of hydroxide ions in a solution

What is a monomer?

• A large molecule made up of many monomers

• A small chemical unit that makes up a polymer

• A compound made up of carbon, hydrogen, and oxygen

• A simple sugar molecule

What is a carbohydrate?

• A compound made up of carbon, hydrogen, and oxygen atoms

• A simple sugar molecule

• A macromolecule made mostly from carbon and hydrogen atoms

• A macromolecule containing hydrogen, oxygen, nitrogen, carbon, and phosphorus

What is a nucleotide composed of?

• A 5-carbon sugar, a phosphate group, and a nitrogenous base

• Carbon, hydrogen, oxygen, and nitrogen

• Glycerol and fatty acid tails

• Amino group and carboxyl group

Tags

NGSS.MS-LS1-1

What is the function of a catalyst in a chemical reaction?

• It enters into a chemical reaction

• It speeds up the rate of a chemical reaction

• It is needed to get a reaction started

• It is a reactant of an enzyme-catalyzed reaction

Tags

NGSS.HS-PS1-5