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unit 2-sb

pure subsancs and mixtures

QuestionAnswer
matter •Has mass (g, kg). •Takes up space or volume (mL,L or cm3, m3). •EVERYTHING AROUND US.
mixture •Made up of 2 or more substances. •Can be made up in different ways (ie. different concentrations, or combinations), therefore, a mixture does not have fixed chemical composition, or a chemical formula. •Properties of a mixture are the blended . .
Heterogeneous Heterogeneous is an adjective that describes substances or materials. •means not the same throughout. •Usually more than 1 visible phase is obvious with the naked eye
Solutions Homogeneous mixtures. •Made up of a solute and solvent. •Solute dissolves into the solvent. •One visible phase. •Solutions can be made up of solids, liquids and gases. meateals as well
Homogeneous Homogeneous is an adjective that describes substances or materials. •means the same throughout – same composition and concentration – uniform appearance. •One visible phase is seen with the naked eye (without a magnifier). No visible “bits” or layers.
Pure Substances Are compounds or elements. •Are truly homogenous - with the same composition and concentration throughout. •Have one visible phase. •Can be described with a chemical formula and has a fixed ratio of elements. Made up of all the same particles
Compounds 2 or more elements bonded together to make molecule. •Compounds of the same substance have the same chemical formula the same chemical composition.water is H2O – 2 hydrogen atoms bonded to 1 oxygen atom. •Ex: salt – , water – H2O, carbon dioxide – CO2.
Elements Made up of atoms. •One visible phase – the same composition and concentration throughout. •Elements can be found on the periodic table. •Atoms are the building blocks of matter. •Examples: iodine crystal – I, iron – Fe, H – hydrogen, C – carbon.
Solid A state of matter • Definite shape •Definite volume •Particles are very close together •Particles stay in the same position but rotate a little
Liquid difinent volume. changing shape, medeaim space bettweenparticals, medeam attraction of paricals.
gas in defentent volume and shape, large shpace bettween particals, but movment bettween particals is very fast.
plasma, the forth state -o-f matter a has that is alectrisity charged, mainly stars and nuculas in outer space.
partical theroy all matter is made up of tiny particals, that have spaces bettween them, allwaysmoveing. when heated particels move faster and pread apart.
Mechanical Mixture diffrent parts that you can see mixted together, also known as a homogeneois mixter
Change of State when a substance changes its state of matter.
Solute the smaller part that is being disolved.
solvent the larger part that is dissolveing the solute
Types of Solutions when i solute and a solvent is mixed.
Solubility how well something idsolves
Factors that Affect Solubility factors are: temperature, crushong the solute, and stiring the solution.
Created by: sbelford
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