Opening Look at the following pictures Decide if
- Slides: 24
Opening: • Look at the following pictures. • Decide if each object is mineral or a rock. • Write your answers on the index card provided.
1. Mineral or Rock?
2. Mineral or Rock?
3. Mineral or Rock?
4. Mineral or Rock?
1. Mineral: (Biotite)
2. Mineral: (Olivine)
3. Mineral: (Quartz)
4. Mineral: (Muscovite)
What is a mineral? • A mineral is a naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition
5 Characteristics that all minerals share 1. 2. 3. 4. 5. Naturally occurring Inorganic Solid Crystal structure Definite chemical composition
Naturally Occurring • Naturally Occurring means that the substance must occur in nature, it can not be created or manufactured by people.
Inorganic means that a mineral can not come from something that was once living.
Solid A Solid has a definite volume and shape, its particles are tightly packed together and can not move easily.
Definite chemical composition means that a mineral always contains certain elements in definite, or exact, proportions Almost all minerals are compounds in which two or more elements are combined so they no longer have their distinct properties. Some elements occur in a pure form in nature and are considered minerals (almost all are metals such as copper, silver, and gold)
Crystal structure • Crystal structure means the particles that make a mineral line up in a pattern that repeats over and over again, this pattern creates a crystal. A crystal has flat sides called faces that meet at sharp edges and corners
Crystal structure
Watch “Crystals” by Brainpop… 1. What element are diamonds made from? 2. What do all crystals have in common?
Groups of Minerals • Minerals are grouped by the elements they are made of. Beryl (Emerald) Calcite Amethyst
Mineral Group Silicates Characteristics n. Contain oxygen & silica n. The most abundant group of minerals MICA Examples Quartz, mica Quartz
Mineral Group Non-Silicates Silver Characteristics n. Make up only 5% of the Earth’s crust n. Include some of the most important minerals Examples iron, copper, gold, silver, diamonds, rubies Copper Diamond Gold Ruby Iron
How do minerals form? n 1) Cooling of magma (hot, liquid rock and minerals inside the earth (from the mantle)) n Fast Cooling = No Crystals (mineraloids) n Medium Cooling = small crystals n Slow Cooling = large crystals
How do minerals form? • 2) Elements dissolved in liquids (usually water)
- Look down look up
- Take a look at the following pictures
- Mu look
- Task 2 look at the following pictures what are they doing
- Look at the pictures. answer the questions
- Look ask and answer
- Look at the two pictures carefully describe what you see
- Look at the pictures and answer the following questions
- Decide if the following sentences are compound or complex
- Universal pictures and columbia pictures
- Paramount columbia
- Look at the picture and say
- Task 1 look at the pictures and answer the questions
- Look at the pictures choose the correct sentences
- Task 2 guess what is the picture all about
- Our school paragraph
- Look at the pictures and practise the dialogue
- Look at the pictures and talk about them
- Activity 3.picture analysis
- Write the correct order according the pictures
- How to pronounce mausoleum at halicarnassus
- Look at the pictures and answer the
- Activity 1 picture talk
- Have a look at these pictures
- Look at the pictures and the quotes. discuss in pairs