Matter
Matter is broken into two parts, Pure Substances and...
Mixtures
What is the Formula for Density
D = Mass/ Volume
Name two Physical Properties of objects.
Examples could be Color, Smell, Texture, Boiling Point, Volume, Length...
Chemical Properties require what to be observed?
A change or a reaction.
The resistance to flow of a liquid.
Viscosity
What is an element?
A single atom. Simplest building block of life.
Calculate the density of a 5 gram cube with a volume of 5 mL
Density = 1g/mL
This involves switching states of matter or changing a physical property.
Physical Change
Flammability is an example of what?
A chemical Property
Malleability
To be able to be pounded into a flat sheet
What is the difference between a Compound and an Element?
Compounds are two or more different elements.
Calculate the Density of an object that has a mass of 200 grams and a volume of 10 mL.
20 g/mL
Physical Changes can gain and lose energy, what are the words that describe this?
Endothermic and Exothermic
What is it called when the composition of a substance is changed?
A chemical Change
This is the word for when a Gas is created from a Liquid.
Vaporization
Any material made from a combination of different substances and they retain their own properties.
A mixture
Two cars are the same size, one car is made out of plastic and the other is made out of Steel. Which car has a greater density?
The car made out of Steel.
What is the name of the physical change that happens when a Gas loses enough energy to turn into a Liquid?
Condensation
What are 3 of the main indicators a chemical change is happening?
A color change
Produce a Gas
A new chemical is made/Precipitate
A new smell is produced
Heat is created or lost
Conductivity
When an object moves energy through it
The two types of Mixtures and how they are different?
Homogeneous - Whole mixture looks the same
Heterogeneous - All parts can be seen in the mixture.
What has a Greater Density?
A 200 Pound man floating in a pool or the water in the pool?
The Water, if the man had greater density then he would have sunk instead of floated.
Which physical Change happens when solid carbon dioxide turns into a Gas?
Sublimation
When Iodine and Starch come in contact with each other they turn into a purple mixture, is this a chemical or Physical change
Chemical Change
Plasma
Supercharged Gas