Chemistry Final Exam 2024

Front

What is the total number of atoms in H₂SO₄?

Back

7

Front

What is the correct electron configuration for iodine?

Back

[Kr]5s²4d¹⁰5p⁵

Front

Define a mixture in chemistry.

Back

Two or more substances that are mixed together but not chemically combined.

Front

Which subatomic particles contribute to the mass of an atom?

Back

Protons and neutrons.

Front

How many electrons are present in an atom with the electron configuration 1s²2s²2p⁶?

Back

10

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the significance of the periodic table in chemistry?

Back

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

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

In a chemical reaction, mass is neither created nor destroyed.

Front

What is an ion?

Back

An atom or molecule that has gained or lost one or more electrons, resulting in a net charge.