Compounds and Mixtures Compounds 23 Compounds Examples of

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Compounds and Mixtures

Compounds and Mixtures

Compounds… 23 Compounds Examples of compounds A pure substance made up of 2 or

Compounds… 23 Compounds Examples of compounds A pure substance made up of 2 or more elements chemically combined Na. Cl – salt H 2 O- water C 6 H 12 O 6 -sugar

Compounds have different properties than the elements that make them up Salt – Edible,

Compounds have different properties than the elements that make them up Salt – Edible, safe Sodium- Explosive Chlorine- poisonous Water- Non flammable liquid Hydrogen Flammable gas Oxygen- Flammable gas

Chemical Formula Subscript- a chemical symbol that represents the element and the number of

Chemical Formula Subscript- a chemical symbol that represents the element and the number of atoms • a number written below and to the right of the symbol • H 2 0 subscript

Compounds Form using definite ratios of elements H 2 O-water H 2 O 2

Compounds Form using definite ratios of elements H 2 O-water H 2 O 2 -peroxide CO- carbon monoxide (car exhaust) CO 2 -carbon dioxide

Compounds can be broken down It’s Difficult Can only be broken down using a

Compounds can be broken down It’s Difficult Can only be broken down using a chemical change (electrical current, fire)

Carbon red Oxygen yellow Hydrogen White Sodium green Sulfur blue Potassium orange

Carbon red Oxygen yellow Hydrogen White Sodium green Sulfur blue Potassium orange

Mixtures…back of page 23 • Combination of two or more pure substances that are

Mixtures…back of page 23 • Combination of two or more pure substances that are NOT chemically combined • Ex. Sugar and water Na. Cl + H 20 • No specific Ratio • The parts retain their identity

• Easily separated(filtration, evaporation, sifting)

• Easily separated(filtration, evaporation, sifting)

Two types of Mixtures 1. Homogeneous – looks like one substance (ex. Kool aid,

Two types of Mixtures 1. Homogeneous – looks like one substance (ex. Kool aid, soda) 2. Heterogeneous – looks like two things mixed together (sand water, Italian dressing, pizza)

Mixtures Matter Substances Elements Compounds Mixtures Heterogeneous MixturesMixtures Matter Substances Elements Compounds Mixtures Heterogeneous Mixtures
Compounds and Mixtures Compounds and Mixtures 3 SubstancesCompounds and Mixtures Compounds and Mixtures 3 Substances
Mixtures Elements and Compounds Mixtures elements compounds nMixtures Elements and Compounds Mixtures elements compounds n
Elements Compounds Mixtures Comparing Elements Compounds Mixtures ElementsElements Compounds Mixtures Comparing Elements Compounds Mixtures Elements
Matter MIXTURES HOMOGENEOUS AND HETEROGENEOUS MIXTURES Matter MixturesMatter MIXTURES HOMOGENEOUS AND HETEROGENEOUS MIXTURES Matter Mixtures
Mixtures and Separating Mixtures Mixtures Many of theMixtures and Separating Mixtures Mixtures Many of the
Separating Mixtures Mixtures Their Separation Mixtures elements andSeparating Mixtures Mixtures Their Separation Mixtures elements and
Separation of Mixtures 1 1 Mixtures Many mixturesSeparation of Mixtures 1 1 Mixtures Many mixtures
Separating Mixtures Separating Mixtures Separating Mixtures Mixing sulphurSeparating Mixtures Separating Mixtures Separating Mixtures Mixing sulphur
Separation of Mixtures Separation of Mixtures Mixtures bothSeparation of Mixtures Separation of Mixtures Mixtures both
Separation of Mixtures Separation of Mixtures Mixtures bothSeparation of Mixtures Separation of Mixtures Mixtures both