Basic Physical Science - Chemistry Review

Front

What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction, such as reactivity with acids.

Front

What is a physical property?

Back

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

Front

What subatomic particle has a positive charge?

Back

Proton.

Front

What is the chemical symbol for potassium?

Back

K.

Front

How many elements are in the compound C2H8O?

Back

3 (Carbon, Hydrogen, and Oxygen).

Front

What determines an object's ability to float in water?

Back

The density of the object.

Front

What is the definition of density?

Back

Density is the mass of an object divided by its volume.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only 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 of an element?

Back

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

Front

What is a molecule?

Back

A group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.