8th Grade Science Semester 1

Front

What is the rule regarding horseplay in the classroom?

Back

Horseplay, practical jokes, or pranks in the classroom are always against the rules.

Front

How many atoms of carbon (C) are in C₆H₁₂O₆?

Back

6

Front

When using a razor blade or scalpel, how should you cut material?

Back

Always cut material away from you.

Front

What is the pH level of soap?

Back

10 (Soap is a strong base).

Front

What is the pH level of lemon juice?

Back

2.5 (Lemon juice is a strong acid).

Front

Define a strong acid.

Back

A strong acid is one that completely dissociates in solution, producing a high concentration of hydrogen ions.

Front

Define a strong base.

Back

A strong base is one that completely dissociates in solution, producing a high concentration of hydroxide ions.

Front

What is the pH scale range?

Back

The pH scale ranges from 0 to 14.

Front

What does a pH of 7 indicate?

Back

A pH of 7 indicates a neutral solution.

Front

What is the significance of pH in chemistry?

Back

pH measures the acidity or basicity of a solution, which affects chemical reactions.