Download File

Name ______________________________________________________________ Date ________ Period ____
EOG Review- Chemistry
8.P.1 Understand the properties of matter and changes that occur when matter interacts in an open and closed container.
8.P.1.1 Classify matter as elements, compounds, or mixtures based on how the atoms are packed together in arrangements.
8.P.1.2 Explain how the physical properties of elements and their reactivity have been used to produce the current model of the Periodic Table of
elements.
8.P.1.3 Compare physical changes such as size, shape and state to chemical changes that are the result of a chemical reaction to include changes in
temperature, color, formation of a gas or precipitate.
8.P.1.4 Explain how the idea of atoms and a balanced chemical equation support the law of conservation of mass.
1. Atoms are made of _________________ (+), _________________ (neutral), and ___________________ (-).
2. ______________________ and ____________________ are in the nucleus of the atom and when added together they
give you the ___________________________ of the atom.
3. _________________ move quickly and constantly around the outside of the nucleus in the ____________ __________.
4. The number of __________________ can change which forms _________________ ( + or -).
5. Atoms of the same element will ALWAYS have the same number of ________________ or atomic ______________.
6. We call atoms of the same elements with different numbers of neutrons _____________________.
7. Elements are classified as ________________________, __________________________, or ___________________.
8. Metals are on the ________________ and __________________ of the periodic table. They tend to be:
a. malleable:
b. conductive:
c. usually a ___________________ at room temperature
9. Metalloids are found along the ____________________ on the periodic table.
10. Non- Metals are found on the _______________________ side of the periodic table. They tend to be poor
conductors. Many are _________________________ at room temperature.
11. Label A through D:
A.
B.
C.
D.
19
16
K
S
Potassium
39.098
Sulfur
32.066
12. How many protons does Potassium have?
13. How many electrons does Sulfur have?
14. How many neutrons does Potassium have?
15. How many electrons would Potassium (+1) have?
16. How many protons would Sulfur (-1) have?
C12H6O6
17. How many oxygen atoms are in the molecule above?
18. How many carbon atoms are in the molecule above?
19. How is the periodic table organized?
20. The rows in the periodic table are called ____________________. They are organized by
______________________________________.
21. The columns in the periodic table are called ______________________. They are grouped by
____________________________________________________________.
22. Most of the elements on the periodic table are __________________.
23. Matter is anything that takes up ____________ and has ____________. All matter is made of ___________.
24. Some elements are turned into electrical wires. Which properties (from above) must they have to be used in this way?
Explain why.
25. ___________ can be found by dividing the mass of an object by its volume.
26. What is solubility?
27. Identify the following atoms:
A. _________________
PURE SUBSTANCES:
B. ______________
C. _____________________
_________________are pure substances that cannot be changed into simpler substances.
Elements are composed of _________________ kind of atom.
__________________________ are pure substances that are composed of __________________________types
of elements that are chemically combined.
Compounds can only be changed into simpler substances called elements through _______________________
MIXTURES
Mixtures are ________________________ combinations of two or more different substances that retain their
own individual properties and are combined physically (mixed together).
Mixtures can be separated by physical means (_________________, _________________, _______________)
Characteristic properties can be used to identify different materials and to separate a mixture into its
components.
Mixtures may be heterogeneous or homogeneous.
 In a ______________________________ mixture, which is not uniform throughout, the component
substances can be visibly distinguished. Tossed salad, granite, and iced tea are examples of heterogeneous
mixtures.
 In a ____________________________mixture, which is uniform throughout, the substances are evenly
mixed and cannot be visibly distinguished. Air, steel, clear salt-water are examples of homogeneous mixtures.
STATES OF MATTER- Explain each state in the lines below
What causes a change in state?
Which phase is most dense?
Which phase is least dense?
________________
________________
________________
__________________
__________________
__________________
___________________
___________________
___________________
CHEMICAL AND PHYSICAL PROPERTIES:
__________________________ properties can be observed and measured without changing the kind of matter
being studied.
Physical properties include: shape, density, solubility, odor, _______________ point, ____________ point, and
color
_____________________ properties can be recognized only when substances react or do not react chemically
with one another, that is, when they undergo a change in composition..
Chemical properties include: acidity, basicity, combustibility, and ___________________.
Chemical and Physical properties can be used to ____________________ a substance by comparing the properties of the
substance to unknown substances.
CHEMICAL AND PHYSICAL CHANGES:
______________________changes do not change the composition of a substance, only the physical properties.


Change in ______________________ of matter
Change in _________________ or ______________________
___________________________ changes result in the formation of one or more new substances with new
chemical and physical properties.
The four types of evidence that show a chemical change/reaction has occurred are a change in _________________, a
change in __________, formation of a _______, or formation of a ___________________.
reactions occur at different rates, slow to fast, and that reaction rates can be changed by changing the
____________________ of reactants, the _______________, the surface areas of solids, and by using a
catalyst.
solutions can be acidic, basic, or neutral. The pH scale is used to classify solutions. Neutral solutions have a pH
of 7. Acids have a pH of _________________ than 7. Bases have a pH of _________________ than 7.
Look at each example below. If the change is chemical, write a C, if it is physical, write a P
____ Ice cream melts
____ sugar dissolves
____ water boils
____ Water evaporates
____ wood burns to ash
____ Ice melts
____ Iron Rusts
____ Apple browns in air
____ paper is wrinkled ____ vinegar/baking soda bubble
____ metal is dented
____ sublimation
CHEMICAL FORMULAS AND BALANCING EQUATIONS:
A ______________________________can be used to represent a chemical reaction that has occurred.

An __________________________is used to distinguish between the substance that are broken apart or
combined, and can be understood as meaning “yields” or “makes”.

___________________are the substances broken apart or combined in a chemical reaction and that they
are located on the left side of the arrow in a chemical equation. o
 _____________________________are new substances formed in a chemical reaction and that they are
located on the right side of the arrow in a chemical equation.
Label each part of the chemical equation:
2H2 +
O2
-->
2H20.
______________________
________________________
when materials ______________ with each other, many changes can take place, but that in every case the total
amount of matter _________________ is the same as ________________.
balanced chemical equation supports the law of conservation of matter.
What does the Law of conservation of Matters state?
28. Balance the following reaction:
____NaCl
+
____I2 
____ NaI
+
____Cl2
30. 2 grams of sodium are mixed with 2 grams of chlorine. They undergo a chemical reaction. What is the mass of the
product, sodium chloride?