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32 Cards in this Set

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