A mineral is a substance that: 1. forms in nature

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A mineral is a substance that: 1. forms in nature 2. is a solid and made up of substances that were never alive. 3. has a definite chemical make-up 4. has a crystal structure

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A mineral is a substance that: 1. forms in nature 2. is a solid and made up of substances that were never alive. 3. has a definite chemical make-up 4. has a crystal structure. A rock: 1. is a solid 2. it forms naturally - PowerPoint PPT Presentation

Transcript of A mineral is a substance that: 1. forms in nature

Page 1: A mineral is a substance that:      1. forms in nature

A mineral is a substance that:

1. forms in nature

2. is a solid and made up of substances that were never alive.

3. has a definite chemical make-up

4. has a crystal structure

Page 2: A mineral is a substance that:      1. forms in nature

• A rock:

1. is a solid

2. it forms naturally

3. it usually contains 2 or more minerals

Page 3: A mineral is a substance that:      1. forms in nature

• Minerals are formed by natural processes.

• Every type of mineral can form in nature by processes that do not involve living organisms.

• Do rocks make up minerals or do Minerals make up rocks?

• What is the difference between a rock and a mineral?

Page 4: A mineral is a substance that:      1. forms in nature

• Minerals are solid.• 1. Minerals are made up of elements.• 2. An element is a substance that contains only one

type of atom.• 3. An atom is the smallest particle an element can

be divided into.

Page 5: A mineral is a substance that:      1. forms in nature

•Each mineral has a definite chemical makeup: it consist of a specific combination of atoms or certain elements. •Minerals Gold and Copper contain atoms of the same type. Minerals Halite has atoms of sodium and chlorine.•The type of minerals that form in an area depends in part on what elements are found there.

Page 6: A mineral is a substance that:      1. forms in nature

• Minerals are classified based on chemical composition into 2 groups.– Silicates & Non-silicates– All the minerals in the silicate group contain

oxygen and silicon – the two most common elements in Earth’s crust.

Page 7: A mineral is a substance that:      1. forms in nature

Crystal Structure: A Crystal is a solid.• In a crystal the atoms are arranged in an orderly,

repeating three-dimensional pattern.• Each mineral has its own type of crystal structure.• In some cases, two minerals have the same chemical

composition but different crystal structures.

Page 9: A mineral is a substance that:      1. forms in nature

Diamond and graphite are made of just one element- carbon. But, the arrangements of the carbon atoms in these two minerals are not the same, so they have different crystal structures and very different properties. Diamonds are extremely hard and have a brilliant sparkle. Graphite is soft, gray and dull.

Page 10: A mineral is a substance that:      1. forms in nature

• * Minerals form many ways:1. Halite forms when water evaporates in a hot shallow part of the ocean, leaving behind the salt. (Halite used in table salt)

2. Talc, a mineral used to make baby powder, forms deep in Earth as high pressure & temperature causes changes in solid rock.

Page 11: A mineral is a substance that:      1. forms in nature

3. Minerals such as quartz grow as molten rock cools.

4. As hot water cools, the dissolved minerals in the water separate from the water and become solid. Gold

5. A few minerals are produced by living things .

Page 13: A mineral is a substance that:      1. forms in nature