Chemistry Mini Proficiency #2 Review 22-23

Front

What does the letter 'D' represent on an element?

Back

Atomic Mass

Front

How many atoms are in the chemical formula Fe2O3?

Back

5

Front

How many atoms are in the chemical formula C6H10O5?

Back

21

Front

What is a chart that organizes elements by their properties?

Back

Periodic Table

Front

What is density?

Back

How closely particles are packed together.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What does the atomic symbol represent?

Back

The unique one or two-letter abbreviation for an element.

Front

What is the difference between atomic mass and atomic number?

Back

Atomic mass is the average mass of an atom, while atomic number is the number of protons.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.