Physical Science Semester Test Dec 2023

Front

What is the solvent in a solution?

Back

The substance that dissolves the solute, typically a liquid. In the case of Kool-Aid, the solvent is water.

Front

What state of matter has no definite shape and no definite volume?

Back

Gas.

Front

What is a valence electron?

Back

The number of electrons in the outermost shell of an atom.

Front

What are neutrons?

Back

Particles in an atom that have no charge.

Front

What is a period in the Periodic Table of Elements?

Back

A horizontal row of elements.

Front

What is the definition of a solute?

Back

The substance that is dissolved in a solution.

Front

What is the definition of a mixture?

Back

A combination of two or more substances that retain their individual properties.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the definition of density?

Back

The mass of an object divided by its volume.