Atoms and Molecules Flashcards
the smallest units of matter that can not be broken down chemically speaking
atoms
what are atoms made up of
subatomic particles
what are the 3 main subatomic particles ?
Protons, Neutrons and electrons
particles with a positive charge
protons
particles with no charge, and only has one molecule
Neutrons
particles with a negative charge; orbits the nucleus of an atom
Electrons
When an atom has an ____number of protons and electrons it is neutral
equal
when an atom loses an electron is becomes, positive or negative ?
positive
when an atom gains an electron does it become negative or positive ion
negative
are substances that can not be broken down into other substances and made up of single types of atoms
Elements (think elemental table aka like Gold)
formed with two or more elements chemically in a particular proportion
compounds
Compounds have qualities that differ from the elements which they were made of. For example, at room temperature, water is a liquid compound made of up hydrogen and oxygen, which uncombines, are both gasses. Compounds are represented by….?
Chemical Formulas
(The chemical formula for water is H20, indicating that a water molecule is made up of two atoms rather than just one.)
Physical combinations of 2 or more substances that keep their own properties like with salt water*
Mixture
When elements combine to form molecules or ionic compounds, their constituents are held together by
bonds
the two types of compounds that bound together atoms
ionic and covalent bond
