What makes a mineral
What are the 5 characteristics of minerals?
Solid, Inorganic, naturally occuring
fixed composition
crystal structure
What property are you observing when you perform the scratch test?
Hardness
Which of the 5 characteristics is described by "not a liquid or a gas"?
Solid
What is a pure substance that is only made from one type of atom?
Element
Give an example of a gemstone.
Diamond, rubies, topaz, emerald
Minerals from when?
Rivers erode a mountain or magma cools
Magma Cools
When you observe the color left behind when you rub a mineral on a piece of tile you are testing for what property?
Streak
Which of the 5 characteristics is described by "Not made by humans"?
Naturally occuring
What do you call a substance that is made of two or more atoms combined?
Compound
Give an example of something in this room that is inorganic.
Chair, the fan, the projector, etc
What are both ways a mineral can form?
1. When magma or lava cools
2. Water evaporates and leaves behind minerals
If you are observing how a mineral reflects light, what property are you observing?
Luster
Which of the 5 characteristics is described by "Made from materials that are not, and never were alive"?
Inorganic
How do we test for the property of hardness?
Scratch test
Which has a greater density, water or ice? How do you know?
Water because ice floats in water.
Coal is formed underground when dead plants are pressed between layers of rock. This happens over long periods of time. Is coal a mineral? Why or why not?
Not a mineral, because it was once living. Coal is not inorganic
If you break a piece of quartz to see if it splits smoothly or jaggedly, what property are you testing?
Cleavage and fracture
Which of the 5 characteristics is described by "Always made from the same chemicals"?
Fixed composition
What is ore?
A rock that contains a useful mineral
What are the 3 types of rocks?
Igneous, Metamorphic, Sedimentary
Is water ever a mineral? Why or why not.
Yes, when water is in frozen form (ice) it is a mineral.
5 g/mL
Which of the 5 characteristics is described by "The atoms/elements that make up the substance line up in a repeating pattern"?
Crystal structure
How are rocks and minerals different?
Minerals are inorganic and rocks are not.
Minerals have a crystal structure and rocks do not.
Minerals have a fixed composition and rocks do not.
How does an igneous rock become metamorphic?
Heat and pressure is added