Chemistry 1st Semester

Front

What is decomposition?

Back

Decomposition is the process of breaking substances apart.

Front

How many elements are in the compound H₂CO₄N₅?

Back

There are 4 elements in the compound H₂CO₄N₅.

Front

As you move across the periodic table, what happens to atomic radius?

Back

Atomic radius decreases because the number of protons increases.

Front

Who is the scientist responsible for the Gold Foil Experiment that discovered the nucleus?

Back

The scientist is Rutherford.

Front

What are subatomic particles that are neutral in charge?

Back

Neutrons are subatomic particles that are neutral in charge.

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 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 law of conservation of mass?

Back

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

Front

What is an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the role of electrons in chemical bonding?

Back

Electrons are involved in chemical bonding by being shared or transferred between atoms.