Physical Science Fall Final Review

Front

Which group of elements are all gases at room temperature?

Back

Group 18 (Noble gases) are all gases at room temperature.

Front

What is the most stable electron configuration in an atom?

Back

The most stable electron configuration is when the electrons are in orbitals with the lowest possible energy.

Front

What characteristic of a metallic bond explains some of the properties of metals?

Back

The mobility of electrons explains many properties of metals, such as conductivity.

Front

What is an atomic mass unit?

Back

An atomic mass unit is defined as one twelfth the mass of a carbon-12 atom.

Front

What does Boyle's law relate pressure to?

Back

Boyle's law relates pressure to volume.

Front

What is the definition of a gas?

Back

A gas is a state of matter that has no fixed shape and takes the shape of its container.

Front

What is the principle of conservation of mass?

Back

The principle of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

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 formula for calculating density?

Back

Density = Mass/Volume.

Front

What is the significance of the atomic number?

Back

The atomic number represents the number of protons in the nucleus of an atom and determines the element's identity.