Chemistry Assessment

Front

What is the Law of Conservation of Matter?

Back

The principle stating that matter cannot be created nor destroyed, only transformed from one form to another.

Front

What element is represented by the electron dot diagram for O?

Back

Oxygen (O) is represented by the electron dot diagram with 6 valence electrons.

Front

If a gas expands from 10.0 L to 15.0 L at constant temperature, what happens to its pressure?

Back

The pressure decreases according to Boyle's Law, resulting in a final pressure of 0.67 atm.

Front

Define matter.

Back

Matter is anything that has mass and takes up space.

Front

What is H2SO4 classified as?

Back

H2SO4 is classified as a compound.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is made up of two or more elements chemically bonded together.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that involves the rearrangement of the molecular or ionic structure of a substance.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.