psychical and chemical changes
Can be observed or measured without changing to composition of matter
What is a physical property
cannot be chemically converted or broken down
What is an Element?
positively charged particals
What are protons
one of the weakest bonds
hydrogen bond
compounds breaking down into two or more substances
what is a decomposition reaction
The changing of chemical makeup
What is a chemical reaction
_+ solute= Solution
What is a solvent
How you find the number of electrons
What is atomic number
A bond between two non metals is
Covalent
A chemical reaction where an element replaces a similar element
What is a single replacement reaction
can be observed or measured only when undergoing a change.
what is a chemical propety
homogenouse mixture with medium sized partical
What is a Collide
negitivly charged particals
what is electrons
A charged atom is a(n)
What is an ion
this chemical reaction feels hot
What is an exothermic reaction
Changes that effect the form of a chemical substance
what is a physical change
a heterogenous mixture with large particals
Suspention
things on the outside shell
what are valance electrons
a force of attraction between positively charges metal ions and valence electrons
What is a metallic bond
less energey is released when new bonds form
what is an endothermic reaction
a chemical change
what is a chemical reaction
one substance blended with another without a chemical reaction
Mixture
determining how many protons and nutrons in the nucleaus
What is the first step in how to draw a Bohr model
model elements
involves O2
what is a combustion reaction