16998845
Description
Flashcards by Brigid Vella, updated more than 1 year ago
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Created by Brigid Vella
almost 7 years ago
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| Question | Answer |
| What is an ELEMENT? | An ELEMENT is a pure chemical substance, made out of a SINGLE type of ATOM. |
| Give examples of an element | ALL elements can be found in the periodic table. examples: Oxygen, Carbon, Hydrogen |
| What is an ATOM? | An ATOM is the basic building block of matter |
| What is a MOLECULE? | A MOLECULE is when two or more atoms are JOINED together |
| Properties of METAL | • Solid at room temperature (except for mercury) • Shiny if polished • Conduct heat • Conduct electricity • Bends without breaking • Can stretch into wires |
| Give examples of METALS | cobalt Iron Gold Copper Magnesium Calcium |
| Properties of NON-METALS | • Solids, liquids and gases at room temperature • Not shiny • Does not conduct heat • Does not conduct electricity • Brittle (breaks easily if solid) • Cannot stretch easily |
| Give examples of NON-METALS | Hydrogen Oxygen Carbon Nitrogen Sulfur Chlorine |
| What is a COMPOUND? | A COMPOUND * Is a pure chemical substance made up of TWO or MORE different ELEMENTS * The substances are JOINED together chemically *They cannot be physically separated |
| Give examples of: * A COMPOUND * The ELEMENTS present * The number of ELEMENTS present | Salt - 2 - Sodium and Chlorine Water - 2 - Hydrogen and Oxygen Carbon Dioxide - 2 - Carbon and Oxygen |
| Name this Compound | SALT |
| Name this COMPOUND | WATER |
| Name this COMPOUND | Carbon Dioxide |
| What is a MIXTURE? | A MIXTURE • is not a pure chemical substance • it is made up of TWO or MORE different elements or compounds that combine physically, not chemically * The substances can be PHYSICALLY separated |
| Give examples of a MIXTURE | Salty Water - Salt & Water Air - a number of gases |
| What are METAL ALLOYS? | A mixture of METALS and another ELEMENT |
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