Q2 BMA Exam 8th Grade 2024-2025

Front

What is the difference between replication and repeated trials in scientific experiments?

Back

During replication, a different investigator does the experiment again. During repeated trials, the original investigator does the experiment again.

Front

What is a chemical change?

Back

A chemical change produces new substances with different properties than the original substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

How can a liquid be changed into a solid?

Back

Remove energy from the liquid so that its particles slow down.

Tags

NGSS.MS-PS1-4

Front

What pH value represents the strongest acid?

Back

pH=1.

Front

Why can liquids change shape?

Back

The particles in a liquid can move past each other.

Front

What is the definition of a solid?

Back

A solid has a definite shape and volume, with particles that are closely packed together.

Front

What happens to the particles in a substance during a physical change?

Back

The particles rearrange but the substance remains the same.

Tags

NGSS.MS-PS1-4

Front

What is the pH scale used for?

Back

The pH scale measures the acidity or basicity of a solution.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Tags

NGSS.MS-PS1-4

Front

What is the definition of an acid?

Back

An acid is a substance that donates protons (H+) in a solution.