Element, Compound, Mixture review
3 classes of matter Elements Compounds Mixtures
3 classes of matter Elements pure made of one type of atom Compounds made of two or more different types of atoms CHEMICALLY combined/bonded together Can be separated by CHEMICAL REACTIONS Mixtures physical combinations of different substances can be separated by exploiting the different physical properties of different components of the mixture.
Identify the element, compound & mixture
Identify the element, compound & mixture H2O salad C6H12O6 Fe Salt Water Alloys
Identify the element, compound & mixture H2O compound salad mixture C6H12O6 compound H2 element Salt Water mixture Alloys mixture
Types of Mixtures Homogeneous Heterogeneous Sort the descriptions into each class: looks the same throughout the mixture can identify different components components distributed equally components distributed unequally/unevenly solution air brass soil
Types of Mixtures Homogeneous Heterogeneous looks the same throughout the mixture soil components distributed equally can identify different components solution components distributed unequally air brass
What type of mixture is this?
What type of mixture is this? this is a heterogeneous mixture because the components are not distributed equally
Coffee is a(n) Element Compound Mixture Homogeneous mixture Heterogeneous mixture Solution
Coffee is a(n) Element Compound Mixture Homogeneous mixture Heterogeneous mixture Solution
Sulfuric Acid (H2SO4) is Element Compound Mixture Homogeneous mixture Heterogeneous mixture Solution
Sulfuric Acid (H2SO4) is Element Compound Mixture Homogeneous mixture Heterogeneous mixture Solution
Iron (Fe) is Element Compound Mixture Homogeneous mixture Heterogeneous mixture Solution
Iron (Fe) Element Compound Mixture Homogeneous mixture Heterogeneous mixture Solution
The best example of a solution is: Baking Soda (NaHCO3) Coca cola Chex mix Iron filings (Fe)
The best example of a solution is: Baking Soda (NaHCO3) Coca cola Chex mix Iron filings (Fe)
How to read a formula H2O NaOH H2 Ag O2 H2SO4 What are the subscripts for each of the following formulas? What if an element doesn’t have a subscript? What information does the subscript tell you?
How to read a formula H2O NaOH H2 Ag O2 H2SO4 What are the subscripts for each of the following formulas? What if an element doesn’t have a subscript? We assume it’s a “1” H2O1 Na1O1H1 What information does the subscript tell you? The number of atoms of each element in a molecule.
What is a pure substance?
What is a pure substance? Pure substances are made of only one type of substance. Elements and compounds are pure substances. Every particle of an element or a compound is identical…..PURE! Mixtures are not pure, they are physical combinations of different elements and compounds.
How do you break down an… Element? Compound? Mixture?
How do you break down an… Element? You CAN’T break an element into simpler parts using natural processes. Compound? compounds are broken into simpler parts through chemical reactions H2O H2 + O2 Mixture? because they are physically combined, you can use the physical properties of different components to separate the parts of a mixture.
Processes used to separate mixtures: sifting – uses differences in size to separate components filtering – uses very small pores in the filter to separate components. Frequently used in conjunction with solubility distillation – evaporation and condensation of different parts of a mixture. Differences in boiling points are exploited. Physical properties used: magnetism – to separate iron filings solubility melting & boiling points
Element, Compound, Mixture? Chicken Noodle Soup
Element, Compound, Mixture? Heterogeneous Chicken Noodle Soup
Element, Compound, Mixture? Salt NaCl
Element, Compound, Mixture? Salt NaCl
Element, Compound, Mixture? Copper Cu
Element, Compound, Mixture? Copper Cu
Element, Compound, Mixture? Soil
Element, Compound, Mixture? Heterogeneous Soil
Element, Compound, Mixture? Sugar C₆H₁₂O₆
Element, Compound, Mixture? Sugar C₆H₁₂O₆
Element, Compound, Mixture? Water H₂O
Element, Compound, Mixture? Water H₂O
Element, Compound, Mixture? Air
Element, Compound, Mixture? Homogeneous/solution Air
Element, Compound, Mixture? Gasoline
Element, Compound, Mixture? Homogeneous/solution Gasoline
Element, Compound, Mixture, or Solution? Trail Mix
Element, Compound, Mixture? Heterogeneous Trail Mix
Element, Compound, Mixture? Kool-Aid
Element, Compound, Mixture? Homogeneous/solution Kool-Aid
Element, Compound, Mixture? Neon (Ne) Gas in the Sign
Element, Compound, Mixture? Neon Gas in the Sign
Element, Compound, Mixture? Hydrogen Peroxide
Element, Compound, Mixture? Hydrogen Peroxide
Element, Compound, Mixture? Lucky Charms Cereal
Element, Compound, Mixture? Heterogeneous Mixture Lucky Charms Cereal
Element, Compound, Mixture? Oxygen
Element, Compound, Mixture? Oxygen