Chemistry in life
Chemistry studies _____ and its transformations
Matter
________ properties do not depend on the amount of ______
Intensive/matter.
__________ are created by the __________ of two or more _______ substances
Mixtures/ combination /pure
All methods to separate mixtures are based on ____________ of matter. To apply a method it is necessary to consider if the mixture is _________ or _____________
properties/ homogeneous/ heterogeneous
Pollutants can be found in ________, _______ and soil.
Water/ air
Matter is everything that occupies ________ and _______.
Volume /space
_________ properties depend on the amount of matter, an example can be ________
Extensive / _______
In a mixture there are ____ phases, the _______ phase and the _________ phase. The first one is known as ________ and the second one as __________
2/ dispersing /dispersed/solvent/solute
________ and _______ are methods that use particle size as a property to separate mixtures.
Filtration / Sifting
Mention causes of water, soil and air pollution
__________
Chemical elements are a kind of__________ that is made of _______ kind of atoms. An example can be____
matter/ the same / ____
_________ properties are those that ______ objects present, for example: ______________
General/ all/ _______
__________ are mixtures that present __________ of light due to ________ of the solute
Colloids/ scattering /particle size
Boiling point is a property used in __________ and ___________ to separate mixtures. An example of each one is __________ and ___________
Evaporation / Distillation/ _______ /_________
Mention pollutants of water, air and soil
_______
__________ were one of the first uses of chemistry. An example of it is _____. It helped people to preserve meet long periods of time.
Additives/ Salt
_________ properties are those that allow _______ identification, an example can be _______
Particular/ exact/ _________
Particle size of solutions, colloids and suspension
Less than 1nm
Between 1 and 100
greater than 100
_________ and _________ use density to separate mixtures. In the second method a force called _________ force is applied to a sample. One mixture that can be saparated using the last method is __________.
Decantation/ Centrifugation /centrifugal /blood
Mention effects of water, soil and air pollution for human beings
___________
___________ are substances derived of hydrocarbons and they contribute to the __________ effect
Chlorofluorocarbons/ greenhouse
__________ is the property of matter used to ________ other substances by __________ them.
Reactivity/ identify / mixing
Mixtures can ________ or lose their properties if _______
improve/ solute or solvent is added
___________ uses the _________ to a solvent to separate the components of a mixture. One mixture that can be separated this way is ____________
Chromatography/ affinity / ________
Mention and explain at least 3 ways to decontaminate water, soil or air.
Filtration/ treatment plants/ phytoremediation/ clean energies/