Download 7A SCIENCE FINAL REVIEW - MERRICK 7th SCIENCE REVIEW

7A SCIENCE FINAL REVIEW
Chemistry
Students will be able to:
___ Define matter.
___ Describe the difference between atoms and molecules.
___ Define elements, compounds, and mixtures.
___ Recognize elements from compounds if given the chemical symbol or a model.
___ Describe the difference between a chemical and physical property of matter, give examples of each.
___ Describe the difference between a chemical and physical change, list examples of each.
___ List evidence to show a chemical change has occurred.
___ Describe how chemical bonds hold two elements together to create a compound.
___ Describe the difference between a solid, liquid or gas. (Include speed of molecules, shape and volume)
___ Define melting, freezing, evaporation and condensation, and identify them on a phase change graph.
___ Use the Periodic Table of Elements to determine the number of protons, neutrons and electrons present in
the atom for given element.
___ Compare protons, neutrons and electron. (Be sure to include their charge and location)
___ Identify the Noble Gases on the Periodic Table and describe the significance of them.
___List the properties of metals and non-metals.
___ Describe how sifting, filtering, heating, and magnetism can be used to separate a mixture.
___ Define solute and solvent.
___ Analyze a solubility curve graph and be able to determine how many grams of solute will dissolve at a
given temperature, and at what temperature will a given amount of solute dissolve.
___ Define saturated, unsaturated and supersaturated solution and identify which is present using a solubility
curve.
Chemistry
1. Identify the following as an element or compound
a. Fe = _________________
b. O = ______________________
c. MgO= _______________
d. F = ______________________
e.
f.
_________________
__________________
2. The speed of molecules is slowest in a ________________________ and faster is a _________________.
Solids have a defined ____________________ and __________________. Liquids have a defined volume but
no defined ______________________. Gases do _________ have a defined shape or volume.
3. Fill-in below:
solid
liquid
liquid = ________________
gas = ___________________
liquid
gas
solid = ________________
liquid = _______________
4. When a piece of magnesium ribbon is placed into beaker containing hydrochloric acid bubbling is observed,
this means a ___________________ change has taken place.
Water freezes to produce ice, this means a _____________________ change has taken place.
5.
6
12 How many protons does carbon have? ___________ How many electrons? ___________
C
How many neutron does carbon have? ___________
6. Which column represents the noble gases? ____________
7. What is the chart called? _____________________________
8. Explain how to separate a mixture of gravel, sand, salt and iron fillings.
9.
a.
b.
c.
Using the Solubility Curve answer the following questions.
How many grams of KNO can be dissolved at 40 C? ________
At what temperature can 90 grams of NaNO be dissolved? _________
If there are 100 grams of KI dissolved at 10 C the solution is
_______________________ .
10. What was the solvent used for the solubility curve?
____________________