Matter Mind Map 7/8
Macroscopic - You can see with your eyes
Examples - chairs, desks, tables, cups, radio, people, water, bottles - Osama
Microscopic - cannot see with your naked eye
Bacteria, atoms, molecules, viruses, air, cells, organelles
States of matter
Gas, liquid, solid, plasma
Properties - A characteristic of matter.
Density
Mass (grams) - Mr. Z
volume
atomic structure :
boiling/condensing point
Freezing/Melting point, for example 0C is the melting/ freezing point of water.-Osama
the temperature at which a liquid turns to gas and evaporates-osama
The temperature at which a liquid turns into a solid and v/v
Solubility
the ability to dissolve into a different substance
combustion - the ability to burn (flash point - the temperature at which something catches fire)
Chemical Reactions
Changes
Due to heat/temperature
Pressure
structure of the matter can determine the BP and MP of the material
increase in pressure pushes the molecules together (Gas to liquid to solid)
Motion of Particles
Hot matter has faster particle motion (molecular motion)because they have more energy-osama
Cold Water: Particle motion is slower. because there is less energy-osama
D= m/v
A chemical reaction occurs when one or more substances "reactants" form another substance "product"- Nathaniel -Osama
[Example] (
some of the changes that happen are irreversible but other changes are reversible- joelle
when a chemical reaction happens a new substance is formed, that has different properties-joelle-Osama
Hot water: particle motion is fast, meaning there is more energy-osama
the hotter the water the faster the particles move~hawraa
there are conditions that cause chemical reactions to occur namely;heating,mixing and cooling.- joelle
Heat is how fast the particles move- Osama
two substances mixed together-hawraa
can happen due to energy taken away-Osama
Substances that exist before a chemical reaction takes place and change as a result of the reaction are called , reactants:- Kemi -
New substances that form in a chemical reactions are called products- Kemi
an example of a chemical reaction that is caused when reactants cool is when nitrogen dioxide is cooled it forms dinitrogen tetroxide, due to energy withdrawl. - joelle-Osama
an example of a chemical reaction that is caused when reactants are mixed is, when lead nitrate and potassium iodide are mixed they form lead iodide and potassium-joelle
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another example of a chemical reaction that is caused when there is friction applied on to a reactant is a match which causes fire to occur - joelle
Flammability is a chemical property because you can only notice it when a substance is both undergoing a chemical reaction and burning- Kemi
the capacity of an object- Osama.
Due to energy draw/adition-Osama
solubility is the ability of substances to dissolve in other substances.-joelle
In many chemical reactions, a little bit of energy is needed to get the reaction started- Kemi
did you know?- that it is estimated that 37 thousand billion chemical reactions per second happen in the human body.-joelle
Chemical reactions also happen when one or more reactants are cooled-Kemi
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The colder the water the slower the particles move-hawraa
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heat can also be defined as the transfer of energy between two things when one object is hotter than the other excluding work or mass transfer caused by difference of temperature -joelle.
the SI unit of volume is cubic meters(m3) -joelle
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using a microscope will let you able to see very tiny things you can't see with the naked eye-hawraa
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