Show:
Elements
Physical or Chemical
Scientists
sig figs
Atoms
100
What has an atomic number of 8?
What is What is Oxygen
100
True or false? Water in contact with metal which eventually rusts is a chemical reaction.
True
100
Came up with the idea of atoms.
What is Aristotle
100
how many sig figs in 680
What is 2
100
what charge do electrons have
What is positive
200
Ta tali ta tali what has an atomic number of 17?
What is Chlorine
200
Suger dissolved in water is physical or chemical?
Physical
200
Illustrated the idea that everything is built on atoms.
What is Democritus
200
how many sig figs are in 60,000
What is 1
200
what charge do protons have
What is negative
300
This one is tricky ;) what element has 28 electrons ??
What is Nickel
300
Is combustion an example of physical or chemical?
What is Chemical
300
Created the elements and the periodic table.
What is Dmitri Mendeleev
300
how many sig figs: 12.500
What is 5
300
what charge do neutrons have
What is neutral
400
How many protons does Pm have, and what is the element name?
What is 61 and Promethium
400
Cooking raw meat well done is a chemical or physical reaction?
What is Chemical
400
Discovered the neutron.
What is James Chadwick
400
write the scientific notation for 0.0360
What is 308 X 10 2
400
where are neutrons located
What is in the nuclease
500
How many neutrons does Cu have?
What is 29 neutrons
500
Is melting point physical or chemical?
What is Physical
500
Atomic theory.
What is John Dalton
500
take the number out of scientific notation: 1.850X 10 -3
What is .001850
500
where are electrons located
What is outside the nuclease