Material Girl
The 3D spaces around the nucleus where electrons move
orbitals
Anything made up of matter
substance
substances which are made in a chemical reaction
products
Mixtures which are uniform at the atomic or molecular level; particles not visible even with microscope
– homogeneous mixtures
Gravity acting on mass
– weight
a molecule made up of 2 of the same types of atoms
diatomic molecule
The two main categories of substances
mixtures & pure substances
substances that go into a chemical reaction
reactants
Mixtures which have particles that are large enough to be seen either with the naked eye or a microscope
– heterogeneous mixtures
A change which alters only the appearance of a substance
– physical change
the tendency to resist a change in motion
inertia
atoms of two or more elements bonded together
compound
Any process in which chemical bonds are formed or broken
chemical reactions
Another name for a homogenous mixture in which the particles are mixed at the atomic or molecular level
– solution
The property of a substance that allows it to be hammered or molded into another shape is this
— malleability
the measure of how much space something takes up
volume
2 categories of compounds
molecules & crystals
the chemical symbols and the ratio they are in give us this
chemical formula
A heterogenous mixture in which the particles are not large enough to settle out but they can be seen with a microscope
colloid
The property of a substance that allows it to be pulled into wires is this
– ductility
the 7 diatomic molecules
iodine, hydrogen, nitrogen, fluorine, oxygen, bromine, chlorine
the number of protons which is given on the periodic table is called
atomic number
explain how mixtures are different from compounds
no chemical bond in mixtures
A heterogenous mixture in which the particles are large enough to settle out
– suspension
This occurs in a colloid when the motion of molecules keep the tiny particles from sinking
– Brownian Motion