1: What is the smallest part of a compound called?
mixture
element
atom
molecule
2: One molecule is made of two or more bonded together.
nuclei
mixtures
atoms
compounds
3: Which of the following is a pure substance that can't be separated by physical means, and can't be decomposed into other substances by chemical means?
compound
molecule
mixture
element
4: A substance that cannot be separated physically is called a substance
heterogenous mixture
homogenous mixture
pure substance
mixed substance
5: Which term below represents a pure substance that can be separated chemically, but cannot be separated physically, that is made up of two or more different atoms?
mixture
element
molecule
chemical bond
6: Water is formed when two hydrogen atoms bond to an oxygen atom.
True
The hydrogen and the oxygen in this example are different __True.