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Match it! Select the correct answer from the pull down...Good luck!
Which of the following is the structure of an atom most like?
Waves bounce off when they strike an object.
protons, neutrons
CaCl2
chemicals can seriously damage eyes and skin
Ammonia is a base, and vinegar is an acid.
chemical, physical
the solar system
26
Angie is testing whether ammonia and vinegar are acids or bases. Litmus paper helps determine whether a chemical is an acid or a base. A drop of ammonia turns the litmus paper blue, and a drop of vinegar turns the litmus paper red. What can Angie
Waves bounce off when they strike an object.
protons, neutrons
CaCl2
chemicals can seriously damage eyes and skin
Ammonia is a base, and vinegar is an acid.
chemical, physical
the solar system
26
Police can detect speeding motorists with a radar gun. What property of waves enables them to do this?
Waves bounce off when they strike an object.
protons, neutrons
CaCl2
chemicals can seriously damage eyes and skin
Ammonia is a base, and vinegar is an acid.
chemical, physical
the solar system
26
WARNING: Goggles and Aprongs Must Be Worn at ALL Times. This sign was found at the entrance of a chemistry laboratory. It is an important sign because _____.
Waves bounce off when they strike an object.
protons, neutrons
CaCl2
chemicals can seriously damage eyes and skin
Ammonia is a base, and vinegar is an acid.
chemical, physical
the solar system
26
Ex. A) A piece of paper is burned. Ex. B) A piece of paper is folded in half. Based on the information above, Scenario A is a __ change and Scenario B is a __ change.
Waves bounce off when they strike an object.
protons, neutrons
CaCl2
chemicals can seriously damage eyes and skin
Ammonia is a base, and vinegar is an acid.
chemical, physical
the solar system
26
Which atomic particles will you find inside of the nucleus of an atom?
Waves bounce off when they strike an object.
protons, neutrons
CaCl2
chemicals can seriously damage eyes and skin
Ammonia is a base, and vinegar is an acid.
chemical, physical
the solar system
26
The chemical formula for a compound that has one Calcium atom and 2 Chlroine atoms is _______.
Waves bounce off when they strike an object.
protons, neutrons
CaCl2
chemicals can seriously damage eyes and skin
Ammonia is a base, and vinegar is an acid.
chemical, physical
the solar system
26
If an element has an atomic number of 22 and the atomic mass is 48 how many neutrons does it have?
Waves bounce off when they strike an object.
protons, neutrons
CaCl2
chemicals can seriously damage eyes and skin
Ammonia is a base, and vinegar is an acid.
chemical, physical
the solar system
26
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