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Mix it Up!
Eureka!
E=MC2
Getting physical or chemical!
Stuff
100
The atomic number indicates the number of _______________ & ____________in an atom
What are protons and electrons
100
The scientific name for the ability to hammer something into thin sheets
What is malleable
100
Provide an example of a quantitative observation
What is anything that has a numerical value
100
Cutting a piece of wood is considered what type of change
What is physical
100
The name of the 7th group of elements
What is halogens
200
Mg(SO2)2. How many different atoms are present in this molecule? How many atoms of each element are present?
3 Mg-1 S-2 O-4
200
Happens to particles as they are heated
What is speed up and move farther apart
200
Define opaque
What is cannot see through it
200
One example of an alkali metal that is less reactive than potassium
What is lithium or sodium
200
The change in state from a gas to a liquid
What is condensation
300
Table salt is made up of NaCl particles. Is it a pure substance or mixture?
What is pure substance
300
The most reactive group of metals the periodic table
What are the alkali metals
300
Which substance would be least viscous? Ketchup BBQ sauce Tar water
What is water
300
The two scientists that discovered that electrons orbit around the nucleus of an atom and came up with a way to draw diagrams
Who is Bohr and Rutherford
300
The number of electrons in the outer most shell
What is valence
400
What do elements who are in the same period or row have in common?
What is number of shells
400
The trend for chemical reactivity in groups (families)
What reactivity increases down a group or family
400
This group on the periodic table are stable gases
What are the noble gases
400
This scientist created the periodic table and left blanks in spots where elements had not yet been discovered
Who is Mendeleev
400
Name all three parts of an atom and state its charge
What is proton=postitive, neutron=no charge, electron=negative
500
Why are noble gases so unreactive?
they have full valence shells
500
Count the number of atoms present in this chemical: H202
What is 4
500
The most reactive alkali metal
What is francium
500
2 examples of common transition metals
What are gold, silver, nickle, iron, etc..
500
What are all 5 evidences of chemical change?
What is change in colour, prodution of heat, production of gas, light and new solid.