Physical Science Mid Term Summer 2025

Front

Control Group

Back

The group in an experiment that serves as a standard for comparison and receives no experimental treatment.

Front

Mass Number Calculation

Back

An atom has 29 protons, 29 electrons, and 35 neutrons. The mass number is the sum of protons and neutrons: 29 + 35 = 64.

Front

Gas State of Matter

Back

In a gas, particles are arranged far apart and move freely, allowing them to fill the shape of their container.

Front

Data

Back

Factual information in the form of measurements or statistics used for analysis.

Front

Al and Ga

Back

Aluminum (Al) and Gallium (Ga) are elements that have the most physical and chemical properties in common.

Front

Independent Variable

Back

The variable in an experiment that is changed or controlled to test its effects on the dependent variable.

Front

Solid State of Matter

Back

In a solid, particles are closely packed together in a fixed arrangement, giving it a definite shape and volume.

Front

Chemical Properties

Back

Characteristics of a substance that become evident during a chemical reaction, such as reactivity and flammability.

Front

Physical Properties

Back

Characteristics of a substance that can be observed without changing its chemical composition, such as color, density, and melting point.

Front

Atom Structure

Back

An atom consists of protons, neutrons, and electrons. Protons and neutrons are in the nucleus, while electrons orbit around it.