2024 Semester 1 - FINAL

Front

What does the octet rule state?

Back

Most elements want 8 valence electrons to be stable.

Front

How many energy levels/shells does Calcium (Ca) have?

Back

Calcium (Ca) has 4 energy levels/shells.

Front

Which of these is an alkaline earth metal?

Back

Magnesium (Mg) is an alkaline earth metal.

Front

What is a proton?

Back

A proton is a positively charged subatomic particle.

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be created or destroyed; the mass of the products equals the mass of the reactants.

Front

What is the atomic number of an element?

Back

The atomic number is 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 are the three main subatomic particles?

Back

The three main subatomic particles are protons, neutrons, and electrons.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number and properties, helping predict their behavior.