CHEM ST1

Match the following

• Matter

• anything that has mass and occupies space

• Property

• a trait used to describe a matter

• Chemical Formula

• symbolic expression of a compound or substance

Match the following

• Chemical Properties

• when a matter reacts to another substance

• Chemical Reaction

• cannot be observed without changing chemical composition

• Intensive Physical Properties

• does not depend on the amount

• Extensive Physical Properties

• depend on the amount

• Physical Properties

• can be observed without changing chemical composition

Intensive Properties

• Density

• ability to be plastically deform without breaking

• Malleability

• capacity of being shaped

• Temperature

• how compact the mass in an object

• Ductility

• the intensity of heat present

Gold has a high malleability but low ductility. This means that __

• Gold can be easily compressed but not stretched

• Gold can be easily stretched but not compressed

All are objects with high density, except:

• Concrete

• Gold

• Foam

• Dumbbell

Can you recover your original material in chemical reaction?

• No

• Yes

Match the following

• Carbon Dioxide

• O2

• Water

• CO2

• Dioxygen

• NaOH

• Ammonia

• NH3

• Sodium Hydroxide

• H2O

Find the number of atoms

• 7

• 14

• 21

• 28

Answer explanation

4O2(Fe3),

find the number of atoms

• 24

• 20

Answer explanation

8 + 12 = 20 atoms

also called final goods, these are the things we bought for personal use

• consumer products

• consumer goods