10th Grade Chemistry Vocabulary Assessment

What is the term for a small molecular unit that can be combined to form larger molecules?

• Polymer
• Enzyme
• Monomer
• Buffer

Which of the following represents a large molecule composed of repeating subunits?

• Element
• Polymer
• Acid
• Monomer

What biological catalyst speeds up chemical reactions in living organisms?

• Buffer
• Base
• Acid
• Enzyme

The minimum energy required for a chemical reaction to occur is known as:

• Atomic mass
• Valence electrons
• Activation energy
• Van der Waals force

The process of joining smaller molecules by removing water molecules is called:

• Dehydration synthesis
• Buffer action
• Acid-base reaction
• Polymerization

What scale is used to measure the acidity or basicity of a solution?

• Atomic number scale
• pH scale
• Valence electron scale
• Van der Waals scale

A substance that donates hydrogen ions (H+) in a solution is called:

• Base
• Buffer
• Acid
• Polymer

Which term describes a substance that accepts hydrogen ions (H+) in a solution?

• Acid
• Monomer
• Element
• Base

What helps maintain a relatively constant pH in a solution despite the addition of acids or bases?

• Enzyme
• Buffer
• Polymer
• Monomer

The number of protons in the nucleus of an atom is called:

• Atomic mass
• Valence electrons
• Atomic number
• Van der Waals force