Element and Atom

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.

Phisical Properties.

Matter:any solid,liquid,or,gas.

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