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17 Cards in this Set
- Front
- Back
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Chemical Equations |
Represents what is happening in a chemical change. It shows what is bonded/ing |
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Products |
in a chemical equation, the product shows what is coming out of the change. For example the product of the chemical equation
H2+O is H2O |
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Chemical Bonds |
Chemical bonds are connections between atoms that join and form molecules. They are created from chemical reactions. |
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Chemical Reactions |
Changes that occur to substances during a chemical change. |
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Mixture |
Combination of 2+ substances that form a new substance. No chemical reaction involved. |
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Compound |
A compound is a substance where molecules contain different types of elements. |
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Reactants |
In a chemical equation, reactants are what goes into the change
Example: in H2O is the product in the chemical equation H2+O=H2O |
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Molecule |
Particle of matter made of 2+ atoms joined together very tightly. |
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Chemical Formula |
Set of symbols that describe the number of and type of element in a compound
Example: H2O (water) |
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What are the Main 3 Subatomic Particles? |
They are protons, neutrons, and electrons
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Elements and Atoms relationship |
An element is one type of atom. An element can have multiple atoms as long as they are all the same type
Example: Gold can only have gold atoms |
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What are some examples of physical properties? |
Color, texture, taste, smell, mass, shape, size, hardness, boiling point, melting point, and more
Physical properties can be noticed by one of the 5 senses |
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Does a Change In Physical Property Change The Matter? |
A change in physical properties doesn't change the sample of matter. |
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What is a Chemical Property? |
A chemical property is the ability of a substance to change into another substance with different physical properties. |
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What does an elements' square on the Periodic Table show? |
Top: atomic number- number of protons/electrons
Next down: symbol- represents the element
Next: name- name of the element
Last: atomic mass- weight of one atom of the element |
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How do you find the number of protons and electrons in an atom? |
If you look on the element's square on the Periodic Table Of Elements, it says either on the top or in the top right corner a number which is the number of protons and electrons in an element. |
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How do you find the number of neutrons in an element on the Periodic Table?? |
Look at the elements square, find the atomic mass and the atomic number. Then, subtract the atomic number from the atomic weight (mass number). |
