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Chapter 15 Assesment

Terms in this set (19)

2-3 exmaples of elements
Iron(Fe), Hydrogen (H), Krypton (Kr)
2-3 examples of compounds
Sodium Chloride (NaCl), Water (H2O), Carbon Dioxide (CO2)
2-3 examples of heterogeneous mixture
Oil and water, Salt and pepper, Ice cubes in coca cola
2-3 examples of suspension mixtures
Milk, chalk and water, muddy water
2-3 examples of colloid mixtures
Mayonnaise, butter, gelatin
2-3 examples of homogeneous mixtures
Water, air, vinegar
how can you separate different types of mixtures
Evaporation, Distillation, Filtration
how can you separate different types of pure substances
Chromatography, Distillation, Evaporation
behaviour of physical change
Grinding, Melting/Freezing, Boiling/Condensing, Cutting, Breaking
appearanceof physical properties
Color, Shape, Mass/Volume, Density
difference between physical change and chemical change
a physical chnage is a change in size, shape, or state of matter in which the chemical formula stays the same while a chemical change is a change in of one substance to another there must be evidence too.
examples of physical properties
viscosity, conductivity, malleability, hardness, melting point, boiling point, and density
Examples of physical change
HARDNESS, TEXTURE, COLOR, MELTING, FREEZING, SOLID, LIQUID, GAS
flammability
the ability of a substance to burn
corrosiveness
a highly reactive substance that causes obvious damage to living tissue
explosiveness
the condition of being able to explode easily
pH
quantitative measure of the acidity or basicity of aqueous or other liquid solutions and food
chemical changes examples
rusting iron , digestion of food, burning of gasoline in a car engine, burning paper
Law of conservation of matter/mass
Matter is not created nor destroyed in any chemical or physical change/ Mass of the reactants is equal to the mass of products.
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