Physical Properties

Vocabulary #1 

Matter: any solid, liquid, or gas.  

       

.Mass: amount of matter in a object. Also a measure of ow hard it is to push or pull and object.

Volume: the amount of space an object takes up.

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

Physical property: a property thet can be observed without changing the identify of a subtance.

Physical change: a change in size, shpe or state without changing forming a  new subtance.

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

Chemical change: a change in matter that produces a new subtance with different properties from the original.

Elements and Atoms

Vocabulary #2




Element: a subtance that cannot be broken down any further
into anything simpler.




Atom: the smallest particle of an element
that has the same chemical properties a the
elememt.
Nucleus: an atom's dense center, where most
of the its mass is.
Electron: a negatively charged particle that
moves around an atom's nucleus.
Proton: a positevely 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
conducta heat and electricity, is shiny
abd benable.