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Chemistry
During this unit students will be learning all about atoms, molecules, and elements. We will also focus on what happens when matter changes during chemical reactions.
Unit Study Materials
Here is a blank study guide as well as one that includes the answers to help you study for the test. Below you will also find a "Test Yourself" section for every learning goal. Check out the games and flashcards I have attached for you to use while studying!
chemistry_unit_test_study_guide.doc | |
File Size: | 27 kb |
File Type: | doc |
chemistry_unit_test_study_guide_answers2.doc | |
File Size: | 157 kb |
File Type: | doc |
Learning Goal #1: I understand that all matter is made up of atoms and their subatomic particles. (11/12/12)
Online Chemistry Lab: Build an Atom Online Lab.
During the lab students completed above they discovered that atoms are made up of subatomic particles called electrons, neutrons, and protons. After the lab and some discussion students came up with the conclusion that electrons have a negative charge and are very small. Protons have a positive charge and are much bigger. They are located in the center (nucleus) of the atom. Neutrons are neutral and have no charge but are also located in the nucleus of the atom.
We also discovered that the number of protons in an atom (it's atomic number) determines what element the atom is. The periodic table is organized from left to right by the atomic number. The atomic mass (or weight) is the number of protons and neutrons added together. To help us remember these subatomic particles we sang "The Atoms Family".
The Atoms Family
They're tiny and they're teeny,
Much smaller than a beany,
They never can be seeny,
The Atoms Family.
CHORUS:
They are so small.
(snap,snap)
They're round like a ball.
(snap,snap)
They make up the air.
They're everywhere.
Can't see them all.
(snap,snap)
Together they make gases,
And liquids like molasses,
And all the solid masses,
The Atoms Family
CHORUS
Neutrons can be found,
Whee protons hang around;
Electrons they surround
The Atoms Family
CHORUS
They're tiny and they're teeny,
Much smaller than a beany,
They never can be seeny,
The Atoms Family.
CHORUS:
They are so small.
(snap,snap)
They're round like a ball.
(snap,snap)
They make up the air.
They're everywhere.
Can't see them all.
(snap,snap)
Together they make gases,
And liquids like molasses,
And all the solid masses,
The Atoms Family
CHORUS
Neutrons can be found,
Whee protons hang around;
Electrons they surround
The Atoms Family
CHORUS
Test Yourself!
Quiz yourself by using the game below. The words to choose from are subatomic particles, proton, Neutral, electron, atomic number, and mass number.
Students will also have to be able to determine how many protons, neutrons, and electrons are in each type of element. To practice this skill, play the review game here: http://education.jlab.org/elementmath/. The great part about this game is that it explains how to do the math!
Learning Goal #2: I can explain how the Periodic Table of Elements is organized by similar properties into families and can use it to identify information about different elements. (11/16/12)
Students labeled a periodic table in class much like the one above. They will need to know that Alkali Metals and Alkaline Earth Metals are highly reactive metals. In fact, Alkali Metals are so reactive that they have a powerful reaction even with water as shown in the video below.
Students will also have to know that the Transition Metals are less reactive. Halogens are very reactive non-metals and Nobel Gases are non-reactive gases. Below you will see another periodic table that shows which elements are metals, non-metals, and metalloids.
Fakebook Assignment: Element Fakebook
Students had to research a specific element and use the periodic table to find information about it. They filled out a research sheet and then will create a fake profile page aoout their element using Fakebook. To find a description of the project click on the link above.
Test Yourself!
For this learning goal students will have to be able to identify examples of highly reactive metals, less reactive metals, metalloids, non-reactive gases, and highly reactive non-metals. Quiz yourself using a regular periodic table and then check using the tables above. For more information visit the following website: http://www.chem4kids.com/files/elem_intro.html
Students are not required to memorize the names of the elements but will have to know the most common elements in high school. To test yourself on this skill play the game here: http://www.sheppardsoftware.com/periodictable_0_click_common.html
Learning Goal #3: I can define and identify examples of elements, compounds, and mixtures. (11/27/12)
View the presentation below for a review of what elements, compounds, and mixtures are.
Test Yourself!
Learning Goal #4: I can demonstrate my knowledge of the structure of basic compounds and molecules through models and drawing. (11/30/12)
Students will need to know how to read chemical formulas. For example, we know that H2O has two hydrogen atom and one oxygen atom. The number after each chemical symbol tells us how many of each element is in the molecule. Students will also need to be able to recognize simple compounds such as water, carbon dioxide, and salt.
Water - H2O
Carbon Dioxide - CO2
Salt - NaCl
Learning Goal #5: I can identify the physical and chemical properties of different substances.
Physical properties are things that you can observe or measure without changing the chemical composition of matter. Some examples would be the color, texture, shape, size, appearance, or state (solid liquid, or gas) of matter. Chemical properties are things that you can only observe when you change the composition of matter. Some examples are the pH (or whether something is an acid or a base), the flammability, and the reactivity of certain substances. Students will have to be able to recognize the difference between these two types of properties.
Test Yourself!
Learning Goal #6: I can compare and contrast physical and chemical changes and give examples of each.
Physical changes occur when there is a change in shape, size, state, or appearance of matter. Some examples would be crushing, ripping, or breaking things. Also, when a solid is dissolved in a liquid or when substances are mixed together a physical change occurs. Any type of change in state of matter (from liquid to a gas for example) is also a physical change. Chemical changes occur when atoms are rearranged and a new substance (or substances) are formed. Gas formation, color change, temperature change, and odor production are all pieces of evidence that can tell you a cheimcal change has taken place.