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Quiz Sciences
Lesson E-2 (Science)
created by
izzy927
on 29 Apr 12, enabled by
jimmy
Sciences
Science
Medium level
(73% of success)
12 questions - 76 players
Science Lesson E-2
1
A pure substance that cannot be broken down into any simpler pieces.
Elements
Netutron
Compound
2
The smallest unit of an element that retains the properties of that element.
Protron
Atoms
Nucleus
3
A particle in the nucleus of an atom that carries one unit of positive electric charge.
Molecules
Periodic Table
Protron
4
An atom's dense center where most of its masses are.
Compound
Electric Charges
Nucleus
5
An atom's dense center where most of its masses are.
Atoms
Neutrons
Protrons
6
Any substance that is formed by a chemical combination of two or more elements and acts like a single substance (can only be broken down by a chemical reaction. )
Elements
Molecules
Compound
7
A particle that contains more than on e atom joined together.
Molecule
Protron
Elements
8
How is a compound different from an element?
None of these.
A compound is 2 or more elements that are chemically combined.
A compond has 2 or more subtances and an element has 4
9
Name 2 useful compounds
Fax machine and a computer
None of these.
Salt and Sugar
10
What is a chemical formula?
A way to write a componds name using symbols
H2O and CO2
Scintific names
11
How are elements classified?
Chemical Reactivity or State at room tempurature
Metal/Non meatal
All of the above
12
What is the periodic table?
Table of plants
Table of all the elements
Table to measure points of a game
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