Semester Exam 7th Grade Science

Front

What should you do if you do not understand a direction or part of a laboratory procedure?

Back

Ask the teacher before proceeding.

Front

What phase of matter has particles arranged in a definite geometric pattern and constantly vibrating?

Back

Solid phase.

Front

Is it permitted to chew gum in the laboratory?

Back

No, it is not permitted.

Front

What should you do before leaving the science room?

Back

Clean your work area and equipment, return all equipment to the proper storage area, and wash your hands with soap and water.

Front

What happens to the kinetic energy of particles in a substance when its temperature increases?

Back

It increases.

Front

Define 'solid phase' in terms of particle arrangement and movement.

Back

In the solid phase, particles are arranged in a definite geometric pattern and are constantly vibrating.

Front

What is the importance of asking questions in a laboratory setting?

Back

It ensures safety and understanding of procedures.

Front

What are the three main phases of matter?

Back

Solid, liquid, and gas.

Front

What is the role of kinetic energy in the states of matter?

Back

Kinetic energy determines the movement and arrangement of particles in different states of matter.

Front

What is a safe laboratory practice regarding food and drink?

Back

Eating and drinking are not permitted in the laboratory.