March 19 Centers Quiz

Ethan and Grace are conducting an experiment in their science class. They want to find out what is the term for the lowest possible temperature where nothing could be colder. What is this temperature called?

• Boiling point

• Absolute zero

• Equilibrium

• Melting point

Nora is conducting an experiment in her science class to understand how different liquids flow. Which term describes the measure of a liquid's resistance to flow?

• Viscosity

• Compressibility

• Evaporation

• Osmosis

During a science experiment, Arjun noticed that adding a certain substance to a reaction mixture made the reaction proceed faster without the substance being consumed. What is the term for such a substance?

• Ion

• Isotope

• Catalyst

• Compound

During a science experiment, Benjamin observed a process where water in a beaker gradually disappeared into the air. Which term refers to this process where a liquid turns into vapor?

• Adhere

• Falter

• Accumulate

• Evaporation

Grace is conducting an experiment in her chemistry class to determine the acidity of a solution. What is the term for the measure of the hydrogen ion concentration in the solution?

• pH

• Specific Gravity

• Molecular Weight

• Alkalinity