Do Now: What are the two main categories that scientists sort matter into?

Do Now: What are the two main categories that scientists sort matter into? Pure Substances Mixtures What are the two types of pure substances?

Do Now: What are the two main categories that scientists sort matter into? Pure Substances Mixtures What are the two types of pure substances? Elements Compounds

Classification of Matter: Mixtures

Mixtures – 2 or more substances mixed together, but not chemically bound; physically separated Heterogeneous mixtures Homogeneous mixtures Substances are not evenly mixed 2 samples of the same mixture will not be identical Ex: trail mix, smoke, granite Substances are evenly mixed 2 samples of the same mixture will be identical Ex: soda, brass, air

Heterogeneous Mixtures You can see the different parts making up the mixture The parts of the mixtures are NOT evenly distributed (2 scoops of Lucky Charms won’t have the same amount and type of marshmallows)

Homogeneous Mixtures Can’t see the different parts making up the mixture because it is evenly mixed Two scoops of the mixture will be identical (if I pour Sprite into two glasses, both glasses will contain the same amount of water, sugar, flavorings, and other ingredients)

Solutions Some homogeneous mixtures can also be categorized as solutions Solution – mixture of 2+ substances in a liquid form Solvent – basic form of a solution; water is a universal solvent Solute – what is added into the solution The SOLVEnt disSOLVEs the solute Ex: water (solvent) + salt (solute) = salt water (solution) Solvent Solute Solution

Mixtures Mixtures are physically combined, so they can be physically separated; the atoms are NOT bonded together Separate a bowl of mixed candy into different piles based on type of candy Let salt water evaporate on a windowsill; the salt will be left behind as the water evaporates into vapor

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Brownie

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Brownie: homogeneous mixture

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Blood

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Blood: solution

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Sand

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Sand: homogeneous mixture

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Trail mix

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Trail mix: heterogeneous mixture

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Coin collection

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Coin collection: heterogeneous mixture

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Chocolate milk

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Chocolate milk: solution

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Chocolate milk: solution What’s the solute? What’s the solvent?

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Chocolate milk: solution What’s the solute? Chocolate syrup What’s the solvent? Milk

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Minestrone soup

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Minestrone soup: heterogeneous mixture

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Bowl of rice

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Bowl of rice: homogeneous mixture

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Asphalt

Heterogeneous Mixture, Homogeneous Mixture, or Solution? Asphalt: homogeneous mixture

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