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Physical ScienceGrade 7-9

Acids, Bases, and pH Answer Key

Test the pH of different substances and learn what makes something acidic or basic.

Looking for Acids, Bases, and pH answers? This complete answer key provides verified solutions for all student exploration activities and assessment questions in the ExploreLearning Acids, Bases, and pH Gizmo.

100% Free • Step-by-step explanations • Perfect for homework help • Covers all activities • Updated for 2026

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Understanding pH

Q1.What does pH measure?

Answer

How acidic or basic a solution is, on a scale from 0 to 14.

Q2.What pH is neutral?

Answer

7 - that's pure water.

Q3.What pH range is acidic? Basic?

Answer

Below 7 is acidic, above 7 is basic (alkaline).

Properties and Examples

Q4.What are some properties of acids?

Q5.What are some properties of bases?

Q6.What happens when you mix an acid and a base?

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