A substance that cannot be broken down into simpler chemical substances
Atom The smallest particle of an element that has the characteristics of that element
The center of an element
Atoms of the same element that have different numbers of neutrons
A substance composed of atoms of two or more different elements that are chemically combined,
When two atoms share e- such as H sharing with O in water what is name of the bond?,
Attractive force between two ions of opposite charge
A combination of substances in which the individual compoenets retain their own properties,
The measure of how acidic or basic a solution is
Any substance that forms hydrogen ions H+ in water
Any substance that forms hydroxide ions OH- in water
The chemical bond between a metal and non-metal
Covalent Bond The chemical bond between a non-metal and non-metal
The most reactive non-metals.
The most reactive metals
A covalent bond in which 3 pairs of electrons are shared
A covalent bond in which 2 pairs of electrons are shared.
1 + charge
Any elements in group 1
2 + charge
Any elements in group 2
Group 8 elements that are non-reactive
Electrons in the outer energy level
Any substance that releases hydrogen ions when in water
Any substance that releases OH- hydroxide ions when in water
Closer to 14 on the pH scale
The base unit of substance such as H2O
All the chemical reactions within an organism
e distributed evenly in another substance (solvent).
A molecule with an uneven distribution of charge
A intermolecular interaction formed between a hydrogen atom covalently bonded to an electronegative atom (such as oxygen or nitrogen)
The net movement of particles from an area of higher concentration to an area of lower concentration.
Continuous movement but no overall change in concentration.
Compounds that have the same simple formula but different three dimensional structures. Such as fructose and glucose
A large molecule formed when many smaller molecules bond together
An organic compound composed of carbon, hydrogen, and oxygen.
Organic compounds that have a large proportion of C-H bonds and less oxygen than carbs.,
A large complex polymer conposed of carbon, hydrogen, oxygen, nitrogen and usually sulfur
The basic building blocks of proteins
The covalent bond formed between the amino acids.
A protein that changes the rate of a chemical reaction
A complex macromolecule that stores cellular information in the form of a code.
Subunits that make up nucleic acids
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