Chem Chapter 1

(a)   is the study of matter and the changes that matter undergoes

A (a)   change is one that results in a change of composition; the original substance no longer exist

what is the symbol for amount of substance

• mol

• l

• amu

• a

Whats the symbol for electric current

• m

• amp

• a

• cd

What is the symbol for temp

• t

• f

• c

• k

What are examples of physical change?

• melting

• oxidation

• combustion

• digestion

(a)   is a tentative explanation of observation.

Choose the symbol for mass

• m

• kg

• g

• lbs

(a)   is the procedure to test a hypothesis

Choose the symbol for time

• mins

• s

• a

• k