Element:a substance that cannot be broken down any futher into anything simpler.
Atom:the smallest particlee of an element that has the same chemical properties as the element.
Nucleus:an atom"s dense center, where most it mass is.
Electron:a negatively charge particle that move araund an atoms nucleus.
Proton:a posotively charge particle inside an atom nucleus.
Neutron:a particle with no charge inside an atom nucleous.´
Atomic: Number:the nbunber of protons in an atom.´
Metal:any of a grup of element that conduct head an electricity is shiny an bendable.
chistes
domingo, 20 de marzo de 2011
Phisical Properties.
Matter:any solid,liquid,or,gas.
Mass:the amaunt os space an object take up.
2:Volume: liquid,solid =graduated liquid cylinder and solids graduated ruler (m3)
3:Density:mass,volume (g) m3 = G/m3
iron 500 C
water 100 C
blood 40 C
Mass:a measure of how hard it is to push or pull an object.
Phisical change
1.size.
2.shape.
3.state.
4.mixture.
Chemical Change
1.fermentation.
2.combustion (burning)
3.change in color
Mass:the amaunt os space an object take up.
Volume:the amaunt os sapce an object takes up.
Density:The amaunt of mass in a certain volume of material.
Physical Properties:a property can be observe without changin the identtify of a substance.
Physical Change:a change in saize,shape,or sate without forming a new substance.
Solution:a mixture of one substance dissolved in another so that the properties are the same throught.
Chemical Change:a change in matter that producers a new substance with different properties from the original.
1:Mass:balance (g) 1000=1 kg
2:Volume: liquid,solid =graduated liquid cylinder and solids graduated ruler (m3)
3:Density:mass,volume (g) m3 = G/m3
iron 500 C
water 100 C
blood 40 C
Mass:a measure of how hard it is to push or pull an object.
Phisical change
1.size.
2.shape.
3.state.
4.mixture.
Chemical Change
1.fermentation.
2.combustion (burning)
3.change in color
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