Introduction

Question 1

Chemistry is a science that deals with, except:
A. Composition of matter
B. Chemical properties of matter
C. Structures of matter
D. Energy transformation of matter
E. NOTA

Answer 1

B (physical properties of matter)

Question 2

Organic or Inorganic

• Decompose to CO2, CO, C
• Insoluble in H2O but soluble in organic liquids
• Mainly C, H, O, N
• Covalent molecular
• Low MP, BP

Answer 2

Organic

Question 3

Organic or Inorganic?

• high mp, bp (usually)
• flammable
• may contain C
• ionic and covalent network

Answer 3

Inorganic

Question 4

cannot be broken down intro
simpler substances

Answer 4

Pure substances

Question 5

formed by chemical
bonding

Answer 5

compound

Question 6

basic unit but not
the smallest unit

Answer 6

atom

Question 7

Element or compound?

Oxygen

Answer 7

The oxygen gas (O2) is considered an
element and compound. Why do you
think? It is an element because it is
composed one type of element which
is oxygen. It is a compound because it
is attached to another oxygen.