What equation do you use to calculate Density?
Density = Mass / Volume
Rank the pictures by density (highest to lowest).
1. Solid --> most dense
2. Liquid
3. Gas --> least dense
Luster
Physical
The ability of matter to react chemically with other substances
Reactivity
The ability of matter to catch on fire (ignite) and burn
Flammability
Why do bad/rotten eggs float?
More gas, egg becomes less dense than water
Density of "Pure" water is....
1.0 g/ml
Density
Physical Property
The ability of a substance to withstand damage, breaking, or scratches.
Hardness
The ability of a substance to cause harm to an organism
Toxicity
Objects that have a density less than 1g/ml will _______ in water.
float
What is the name of the "Physical Property" that refers to materials that allow some/little light to pass through.
Images are not clearly visible
Translucent
Mass
Physical Property
The ability of something to bend without breaking
Malleability
The ability of a substance to become a part of (dissolve in) another substance, usually water.
Solubility
Find the density. Then determine if the object will sink or float.
m=36 g
V= 12 ml
3g/ml. Sink
What is the identity of the mystery substance?
Copper - 9g/cm3
Brass - 8.5g/cm3
Iron - 8g/cm3
Mass: 24g Volume: 3 cm3
Density =8g/cm3
Identity = Iron
Flammability
Chemical Property
How compart particles are; relation of amount of matter to amount of space (mass) an object takes up (volume)
Density
Temperature at which a substance’s state of matter changes from a solid to a liquid
Melting Point
What are the "TWO" uses for Density?
1. To tell is something will sink or float
2. Identify an unknown "pure" substance
What do physical and chemical properties have in common?
They both can be used to "Identify" ....an unknown substance
List the 3 chemical properties.
-toxicity
-reactivity
These properties can be observed "without" changing the identity of the substance
Physical Properties
These properties "require" a chemical reaction to occur in order for them to be observed
Chemical Properties