Minerals
Now I Can Define mineralS!
Natural
Inorganic
Crystalline
Definite chemical composition
Solid
Most ____ are solid at room temperature.
Metals
A nugget of gold has a mass of 985g and a volume of 50cm3. What is the density? Show all work.
19.7g/cm3
Changes in state, do not change the chemical identity of a substance.
Physical Change
How can you tell a chemical change has happened? (I need 3 examples)
•Odors can be produced during a chemical change.
•Fizzing and foaming may mean gases are being produced.
•The production of gas is often evidence of a chemical change.
What is a mineral?
1. Natural
2. Inorganic
3. Crystalline
4. Definite chemical composition
5. Solid
They conduct electricity and heat better than nonmetals but not as well as metals.
Metalloids
A metal ruler has a mass of 96g and a volume of 3cm3. What is the density? (show all work)
32g/cm3
Bonds get rearranged and/or new bonds form.
I am a mineral but I am baby powder...
Talc
How is color physical properties of minerals?
–First impression
–Not very reliable because lots of minerals can occur in many different colors
Have low density.
Non Metals
What is the density of the rectangular prism if the mass is 90g? (L=12in) (W=5in) (H=3in)
L*w*h= 180/90=2
2g/in3
Chemical Reactions
I am a mineral but I am in your tooth paste...
Florite
What is the chemical formula for Quartz?
SiO2 is Quartz
What are the 2 main types of mixtures?
Homogeneous- The parts are distributed evenly.
Heterogeneous- The parts are distributed unevenly.
What is the density of the cube if the mass is 24g?
(L=4in)(W=3in)(H=2in)
1g/in^3
Energy that changes from one form to another can be evidence of a...
Chemical Change
I am a mineral but I am a woman's best friend...
Diamond
Usually don’t create a streak on the streak plate because they are harder than the Porcelain tile? What are their exact names? (double points)
Minerals with a hardness greater than “7”
7. Quartz
8. Topaz
9.Corundum
10.Diamond
Something that can not be broken down into simpler matter using physical methods
PURE SUBSTANCE
A nugget of gold has a mass of 965 and a volume of 50cm3 What is the density?
19.3g/cm3
Sike you thought I was gone give you the exact problem from the homework and you weren't going to tell me. SMH
What is the law of conservation of mass?
Mass is not created or destroyed.
Only transformed into a different substance.
I am a property of a mineral I am steak...
The color that is left behind when scratched on a streak plate.
The true color of a mineral
Color of a mineral's powder.