Physical Science
a substance that produces hydronium ions (H3O+) when dissolved in water-PH<7
What is acid?
H2O
water
a change in matter in which the substance that makes up the matter change into other substances.
chemical change
The number of protons in an atom of an element.
atomic number
a substance containing atoms of two or more different elements chemically bonded together.
compound
The temperature at which an element or compound changes from solid to liquid.
Melting Point
neither acid or base - pure water-PH=7
neutral
the ability of a substance to be hammered or rolled into sheets.
malleability
a row of the periodic table
period
the amount of substance in a certain volume.
concentration
mass per unit volume of an object as compared to pure water.
density
NaCI
table salt
two or more atoms that are held together by covalent bonds and act as a unit.
molecule
a positively charged particle in the nucleus of an atom.
proton
a negatively charged particle that occupies the space in an atom outside the nucleus
electron
atoms of the same element that have different numbers of neutrons
isotope
new substances formed in a chemical reaction
products
a mixture in which two or more substances are unequally mixed.
heterogeneous mix
CO2
carbon dioxide
the average mass of protons and neutrons in an atom. It is the same as the average number of protons and neutrons in an atom.
atomic mass
to form a solution by mixing evenly
dissolve
a neutral particle in the nucleus of an atom
neutron
the ability of a substance to be pulled into thin wires
ductility
a mixture in which two or more substances are evenly mixed but not bonded together.
homogeneous mix
a change in the size, shape, form, or state of matter that does not change the identity of the matter.
physical change