Chemistry and Physical Matter
Chemistry and physics are the studies of ____ and _____,
matter and energy
The inner part of an atom that contains the proton and the neutron is called the __________.
Nucleus
Molecule which contains at least two different elements com-bined
compound
A solid with a regular, repeating arrangement of atoms
crystal
Something being dissolved
solute
Scientists say matter is anything that has
mass and volume
These particles have a positive charge and are found inside the nucleus.
proton
An atom which has lost or gained an electron and has a charge
ion
In a chemical reaction, the substance you start with
Reactant
A homogeneous mixture made up of one substance that’s dissolved into an-other substance
solution
The earliest form of chemistry was called _______.
alchemy
Change which does not transform the molecules, but only the way things look or perhaps the state of the chemical substance
Physical reaction
A homogeneous mixture which has particles large enough to be seen with a microscope, but small enough that you can’t see them with the naked eye
colloid
Anything that takes up space
matter
Which substance cannot make crystals?
Polymers
Something that dissolves a substance
solvent
The temperature that makes a liquid turn into a solid is called its
freezing point
Electrons in the very outside energy level of an atom
Valence electrons
What kind of reaction is it when heat energy is absorbed into the product?
endothermic reaction
Closest thing to a universal solvent is _______.
water