Elements and Atoms

Elements and Atoms

Element:A substance that cannot be broken down any further into anything simpler.

Atom:The smallest particle that has the same chemical properties as the element.



Nucleus:An atom´s  dense center, where most of its mass.

Electron:A negatively charged particle that moves around an atom´s Nucleus.

Proton:A positively charged particle inside an atom´s Nucleus

Neutron:A particle with no charge inside an atom´s nucleus.

Atomic Number: The number of protons in an atom.

Metal:Any group of elements that conduct heat and electricity, is shiny and bendable.

Physical Properties

Physical Properties

Matter:Any solid, liquid, or gas.

 Mass:Amount of matter in an object.

Volume:The amont of space an object takes up.

Density:The amount of mass in a certain volume of material.

Physical Property:A property that can be observed without changing the identity of a substance.

Physical Change:A change in size, shape, or state without forming a new substance.

Solution:A mixture of one substance dissolved in another so that the properties are the same throughout.

Chemical Change:A change in matter that produces a new substance with different proprties from the original.