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32 Cards in this Set
- Front
- Back
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A substance that cannot be broken down into other substances by heat, light or electricity
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A. element
B. periodic table C. atom D. nucleus |
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A chart that classifies elements by their properties
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A. element
B. periodic table C. atom D. nucleus |
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The smallest part of an element
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A. element
B. periodic table C. atom D. nucleus |
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Center of an atom, where protons and neutrons are located
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A. element
B. periodic table C. atom D. nucleus |
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Particle in an atom that has a positive electrical charge
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A. proton
B. neutron C. electron D. element |
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Particle in an atom that has no charge
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A. proton
B. neutron C. electron D. element |
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Particle in an atom that has a negative electrical charge
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A. proton
B. neutron C. electron D. element |
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What is matter?
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Everything that takes up space and has mass
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How many elements are known today?
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More than 100
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Name 3 characteristics of metals.
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1. they are shiny
2. they conduct heat or electricity 3. they can easily be hammered into sheets or pulled into wire |
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Name the 3 pieces of information that is found on the periodic table.
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1. element's name
2. element's symbol 3. element's atomic number |
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What are the 3 parts of an atom?
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Protons, electrons and neutrons
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Where are protons and neutrons found in the atom?
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The nucleus
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What does the number of protons in the nucleus give the atom?
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The atomic number
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The number of protons and electrons are what?
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Equal (the same)
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Why is it important for electrical appliances to have nonmetals around the outside of cords, plugs, and handles?
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To protect people from electric shock
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2 or more atoms joined together
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A. molecule
B. compound C. atom |
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A substance made up of atoms of more than one element joined together in a molecule
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A. molecule
B. compound C. atom |
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What atoms is a water molecule made up of?
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2 hydrogen atoms and 1 oxygen atom
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What is the oxygen in the air produced by?
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green plants
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What leaves your body when you breathe out?
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carbon dioxide
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What are polymers?
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Long chains of small molecules
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2 or more substances that are mixed together but can be easily seperated becuase their atoms do not combine
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A. mixture
B. solution C. molecule |
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A mixture in which substance break up into their most basic parts and spread evenly through another substance
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A. mixture
B. solution C. molecule |
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What is a good example of a mixture?
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Fruit salad, because it is made up different fruits that can be easily seperated apart
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Why can't a compound be easily seperated into parts?
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Because the atoms are combined
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Can a liquid solution contain a gas? And give an example, if so.
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Yes, the carbon dioxide in soda
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A change in one or more physical property
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A. physical change
B. compound C. solution |
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What are some examples of physical properties?
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color, shape, taste, odor, texture, and size
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A change that produces new substances with new properties
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A. chemical change
B. mixture C. molecule |
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Why are burning and rusting similiar?
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Because they are both chemical changes
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What is formed when baking soda and vinegar are combined?
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carbon dioxide gas
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