Physical and Chemical

A. Physical Properties1. Appearances—color, size, shape, texture,

smell, mass, volume, density, boiling point, state of matter, etc . . .

2. Describe somewhere you’ve been without telling us it’s name.

2. Behavior: Magnetic

Malleable (Pounded into sheets)

Ductile (Pulled into wires)

Viscosity (Flow of liquid)

3. Using Physical Properties to Separate

B. Physical Change 1. Identity Remains the Same --state of matter change

Ice, Water, and Steam all = H2O

2. Using Physical Change to Separate Evaporation, Filtration,

Magnetism, Dissolving, Chromatography

C. Chemical Properties and Changes --Chemical property is the ability

to: burn flammability

be digested digestibility

react with others reactivity

harm you toxicity

D. Detecting Chemical Change 1. Identity Change

** Color change

** Energy release or used

(HEAT/LIGHT/SOUND)

**Bubbles form / Gas Released

** New Substance Formed

2. Using Chemical Change to Separate

Silver is an element with a symbol of Ag.

Tarnish is silver sulfide.

To remove tarnish from silver, you react the sulfides. That removes the reacted layer and revels the pure silver.

Chocolate Fudge

Fireworks

Material Properties before

PredictionChem or Phys?

Properties after

Ice + heat

Calcium Chloride + water

Sodium Bicarbonate + Calcium Chloride

Sodium Bicarbonate + Calcium Chloride +Phenol Red

1. Physical --water freezes and

expands, cracking rocks

1. Physical --Streams and wind

erode rock and soil away

2. Chemical --Limestone rocks (calcium

carbonate) react with acid in water to form a new substance

Matter is never created nor destroyed

Mass, therefore, is not created nor destroyed

They change form!

If two chemicals have a combined mass of 25.48g react in a flask massing 142.05g.

A gas is produced but not captured. After the reaction the remaining chemical in the flask have a mass of 167.16g.

How much gas was formed in this reaction?

Density measures the amount of matter in a certain volume.

Density determines if items float or sink.

Items with density of LESS than 1.0 g/mL float in water because water = 1.0 g/mL

D = m / v

m (mass) in grams found on balance

v (volume)• L x W x H of regular shape is in cm3

• Immerse irregular shape in water is in mL

4cm

6cmHeight = 2cm

L x W x H4cm x 6cm x 2cm

48cm3

A wooden block raises the level of the liquid in the graduated cylinder from 150ml to 180ml. What is the volume of the block?

180ml – 150ml = 30ml

A wood block as in the last example has sides that are 2cm wide, 5cm long, and 3cm high. What is the volume of the block?• Use the formula l x w x h• The answer will be in cm3

If its mass is 90 grams, what is its density?

2cm x 5cm x 3cm = 2cm x 5cm x 3cm = 30cm30cm33

90g ÷ 30cm3 = 3g/cm90g ÷ 30cm3 = 3g/cm33

If the mass of a rock is 500g and its volume is 25cm3, what is its density?

If the density of a liquid is 1.2 g/ml, and its volume is 10ml, what is its mass?

If Bob’s mass is 80kg and his density is 1.6kg/l, what is his volume?