Chemical Formulas and Equations 8th grade

Front

What is the smallest physical unit of an element or compound?

Back

Molecule

Front

What is a positively charged subatomic particle found in the nucleus of an atom?

Back

Proton

Front

How many atoms are there in H₂SO₄?

Back

7

Front

What are the one or two letters used to represent elements called?

Back

Symbol

Front

How many atoms of carbon (C) are in C₆H₁₂O₆?

Back

6

Front

What is the term for a substance made of two or more different elements that are chemically bonded?

Back

Compound

Front

What is the term for the number placed before a chemical formula to indicate the number of molecules?

Back

Coefficient

Front

What is the term for the number written below and to the right of a chemical symbol to indicate the number of atoms of that element in a molecule?

Back

Subscript

Front

What is the chemical formula for water?

Back

H₂O

Front

What is the process called when a substance changes from a liquid to a gas?

Back

Evaporation