Chapter 2 review
Periodic table
1.
2.
3.
4.
The Horizontal rows are called _______________________________
The Vertical columns are called_______________________________
The elements are grouped by similar ___________________________
The periodic table is arranged by order of increasing_______________
Matter
Properties
Compressible?
Volume
Shape
Molecular description
State
Solid
Liquid (fluid)
Gas
Atoms and molecules
1. Describe the difference between atoms and molecules and atoms
2. Physical properties describe the physical nature of matter.
List five words that are physical properties:
_______________,______________,_____________,_____________,_________
3. Physical changes describe a change that does not result in any change in composition. It
usually involves a change of state or a change of size
List five words that describe physical change
____________,____________,____________,_____________,______________
Changes of state are physical changes, write the appropriate word for the following descriptions;
Solid to Liquid___________________
Solid to Gas___________________
Liquid to Solid___________________
Liquid to Gas__________________
Gas to Liquid____________________
Gas to Solid___________________
Physical properties can also be used to separate mixture into their substituent substances;
Substances- Pure, either elements or compounds.
Elements or atoms cannot be broken down further and still be able to retain the properties of the
element.
Compounds can be chemically broken down into their substituent elements.
List four substances that are elements and four that are compounds
elements_______________,_______________,______________,______________
compounds_______________,_______________,_____________,______________
Mixtures
Homogeneous- A mixture that has the some composition throughout.
List 4 homogeneous mixtures
_____________,______________,______________,______________
Heterogeneous mixtures- A mixture that has distinct components, not the same throughout.
List 4 heterogeneous mixtures
_______________,______________,_______________,_______________
Sporadic hints
1.
2.
3.
4.
If something has a formula or chemical name than it is a substance
Dissolving is a physical process
mixtures are separated by physical means, substances by chemical means( compound)
There are five branches of chemistry;
Analytical-_______________________
Inorganic________________________
Biochemistry_____________________
Organic__________________________
Physical__________________________
5. Two feature that distinguish matter are mass and volume ( the density formula)
6. Pure substance, Buckminsterfullerene, Solution, Molecule, Atom, Alloy, Reaction, Graphite,
and distillation are the terms for the matching.
7. Essay- In one experiment, magnesium metal is melted, in a second, it is burned, Classify
the change in each experiment as a chemical or a physical change. Explain you reasoning.
8. Essay- explain the difference between a substance and a homogeneous mixture: