Chapter 2A-1 Flashcards
What is a atom
Partials that make up matter
What is matter
Something that occupies space, anything that has mass
What are the parts, charges, and locations of the parts of a atom
Protons- positive- inside, electrons- negative-outside, neutron- no charge- in nucleus
List the four main elements that are essential to life
Hydrogen, oxygen, carbon, nitrogen
The atomic number on the periodic table indicates..
Protons in a atom
If the number of protons in a atom is 8 how many electrons are there…and how many neutrons are there…
8 and 8
If you could change the number of protons in a element it would be…
Different element
If you change the number or electrons in a atom it is a..
Ion
What part of an atom forms a bond with another atom?
The electron shell
An atom is satisfied when it has….electrons in its outer shell
8
When an atom has a full outer shell it is very ____ this is why elements in the 8A column will not bond with any others
Stable
In order to have a full outer shell atoms will ___,_____, and ______ there electrons with each other
Give, take, and share
When atoms form bonds by giving or taking electrons from each other, this is called a ____ bond
Ionic
A good example of an ionic bonded molecule is
Table salt (sodium and chloride)
When atoms form bonds by sharing electrons, this is called a ______ bond
Covalent
What is a good example of a covalently bonded molecule
Water (hydrogen and oxygen)
When atoms bond they form a
Molecule
When elements combine chemically by bonded they form
Compound
The molecular formula expresses
Numbers and types of atoms
The structural formula expresses
Atoms are located and the arguements of chemical bonds
What is involved with a chemical change (A) and physical change (B)
- take a place in defenit proportions
- new compounds and formed and/or there is a release of elements
- energy is involved
