Properties of Matter + Separation Techniques + Percentage Composition Flashcards
1
Q
What is an element?
A
one type of atom, that can either be a single atom or a molecule, but cannot be broken down into something more simple (like all silver or all gold atoms)
2
Q
What is a molecule?
A
atoms of any kind that are chemically bonded together
3
Q
What is a compound?
A
a molecule made of atoms of different elements
4
Q
What is a mixture?
A
5
Q
When do you use the sedimentation and decantation separation technique?
A
If the solids/liquids have a significant difference in density, the solid “settles out” of the liquid to some extent if left undisturbed.
The liquid can then be poured “decanted” off the solid
