Chemistry Midterm Review

Front

What are the elements in Group 18 of the periodic table commonly known as?

Back

Noble gases.

Front

What experiment did Ernest Rutherford devise in 1910 to test the plum-pudding model of atomic structure?

Back

Gold foil experiment.

Front

What does the symbol 'C-12' represent in isotopic notation?

Back

Carbon with 6 protons and 6 neutrons.

Front

Which element is highly reactive and is stored under oil to prevent contact with air and moisture?

Back

Sodium (Na).

Front

What does Boyle's Law describe?

Back

The relationship between the pressure and volume of a gas at constant temperature.

Front

If the pressure of a gas is reduced by half while keeping the temperature constant, what happens to its volume according to Boyle's Law?

Back

The volume doubles.

Front

What are alkali metals?

Back

Elements in Group 1 of the periodic table that are highly reactive.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

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 significance of the periodic table?

Back

It organizes elements based on their atomic number, electron configuration, and recurring chemical properties.