WHAT IS A CHEMICAL FORMULA?

A CHEMICAL FORMULA IS THE CHEMICAL SYMBOL OF A SUBSTANCE ALONG WITH APPROPRIATE SUBSCRIPTS THAT INDICATE THE NUMBER OF ATOMS OF EACH ELEMENT MAKING UP A UNIT OR MOLECULE OF THAT SUBSTANCE.

EXAMPLES:

CHEMICAL FORMULA	COMPOSITION	CHEMICAL TYPE	CHEMICAL NAME
	1 ATOM OF CALCIUM AND 2 ATOMS OF CHLORINE	IONIC COMPOUND	CALCIUM CHLORIDE
	2 ATOMS OF HYDROGEN AND ONE ATOM OF OXYGEN	COVALENT COMPOUND	DIHYDROGEN MONOXIDE
	2 ATOMS OF FLUORINE	COVALENT MOLECULE OF AN ELEMENT	FLUORINE

YOU WILL HAVE TO LEARN HOW TO WRITE THE CHEMICAL FORMULA OF A SIMPLE IONIC COMPOUND AS WELL AS THE CHEMICAL FORMULA OF A SIMPLE COVALENT COMPOUND.

ACTIVITY

FROM THE CHEMICALS IN ACTION TEXTBOOK:

• LEARN HOW TO WRITE THE FORMULA OF A SIMPLE IONIC COMPOUND BY READING PAGES 149 TO 152
• PRACTICE WRITING THE FORMULA OF SIMPLE IONIC COMPOUNDS BY DOING QUESTIONS 1 AND 2 ON PAGE 152
• LEARN HOW TO WRITE THE FORMULA OF A SIMPLE COVALENT COMPOUND BY READING PAGE 170
• PRACTICE WRITING THE FORMULA OF SIMPLE COVALENT COMPOUNDS BY DOING QUESTION 2 ON PAGE 170.

ASSIGNMENT

GET YOUR ASSIGNMENT IN THE FORMAT OF YOUR CHOICE:

• WORD FORMAT
• RICH TEXT FORMAT
• PDF DOCUMENT

WHEN FINISHED, HAND IN YOUR FINISHED ASSIGNMENT TO YOUR TEACHER.

ASSESSMENT

YOUR ASSIGNMENT WILL BE GRADED ON THE CORRECTNESS OF YOUR ANSWERS. EACH FORMULA WRITTEN IS WORTH ONE MARK. EACH CLASSIFICATION IS WORTH 0.5 MARK. SEE THE KEY.