COMPOUND
ATOM
a pure substance made up of two or more elements
the smallest particle of an element that may or may not have independent
existence
the smallest particle of an element or a compound that has independent existen
MOLECULE
Exercises
A. Hck the most appropriate answer.
1. Which of the following is a metal?
a. sulphur
b. chlorine
2. Which of the following is a non-metal?
a. silver
b. iodine
gold
d. bromine
c. copper
d. iron
c. oxygen
d. silicon
3. Which of the following is a metalloid?
a. copper
b. silver
4. What is the symbol of iron?
a. I
b. Fe
C. In
d. Na
5. Atoms of different elements combine to form a molecule of
a. an element.
b. a compound.
C. both a and b
d. cannot say
B/Fill
B. Fill in the blanks.
1. Pure substances are classified into
and
2. The
of an element is the abbreviation of its full name.
Answers
Answered by
1
Answer:
the process of too many plants growing on the surface of a river, lake, etc., often because chemicals that are used to help crops grow have been carried there by rain
Answered by
0
Answer:
iron cobalt is the to magnetic properties
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