#1
This subatomic particle has the smallest mass.
What is an electron?
There are this many valence electrons in the outer shell of a Carbon atom.
What is four?
This is the measure of the gravitational pull on an object.
What is weight?
This is the name for a positively charged ion.
What is a cation?
Dalton described this as the most basic unit of matter.
What is an atom?
An isotope is a variant of a particular element that differs in the number of these subatomic particles.
What are neutrons?
This is the term for the variables that remain the same throughout the experiment.
What are constants?
This subatomic particle has the smallest mass.
What is an electron?
The following number has this many significant figures. 40250
What is four?
Bohr's model of the atom is known as this.
What is the planetary model?
SCRAMBLER
The 1st and 3rd players on your team are switching sides!
This is developed by a scientist once a hypothesis has been proven through tests and observations.
What is a theory?
FREE POINTS
Add 300 points to your score
This is the standard unit of measurement for the atomic mass of an element.
What is atomic mass unit (or amu)?
Molecules in this state of matter move around freely, although relatively close to one another.
What is a gas?
Matter that has no definite shape or volume is called this.
What is a gas?
The element Platinum is part of this group number on the periodic table.
What is Group 10?
Alkali metals are the most reactive because they only have this number of valence electrons.
What is one?
Name this compound. KP
What is potassium phosphide?
Name this compound. N2O4
What is dinitrogen tetroxide?
Remove 500 points from your opponent
Potassium nitrate, KNO3, is this type of compound.
What is ternary ionic?
This is the most reliable indicator that a compound is either ionic or covalent.
What is melting point?
These two elements only have two valence electrons in their outer shell.
What is hydrogen and helium?
This is the empirical formula for hexane, C6H14.
What is C3H7?