Unit 5: Periodic Table - 7th Grade 2024

Front

What is the chemical formula for Baking Soda?

Back

NaHCO₃ (1 sodium, 1 hydrogen, 1 carbon, 3 oxygen)

Front

How many different ELEMENTS are in H₂O?

Back

2 (Hydrogen and Oxygen)

Front

What is the chemical symbol for Silicon?

Back

Si

Front

How many sodium (Na) atoms are in 6Na₂Cl?

Back

12

Front

What is a compound molecule?

Back

A molecule made up of two or more different elements chemically bonded together.

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.

Front

What does the periodic table represent?

Back

A tabular arrangement of chemical elements, organized by their atomic number, electron configuration, and recurring chemical properties.

Front

What is the atomic number of an element?

Back

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

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is the significance of the subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a molecule.