random
polyatomic theory
scientists and their theories
Atoms
more random
100
how do you find the number of neutrons
atomic mass-atomic number
100
is this polyatomic? nitrate ion, NO3-
yes, Polyatomic ions are ions which consist of more than one atom.
100
What is the octet rule?
Noble gases can't combine
100
Smallest piece of an element containing all of the properties of that element
what is the exact definition of an atom?
100
What is an element?
An element is a substance whose atoms all have the same number of protons
200
60.42
how many neutrons are in Pd? (palladium)
200
states that matter is composed of discrete units called atoms
What is atomic theory?
200
1897 The first major discovery that set off modern atomic theory was that atoms aren't in fact the smallest things that exist.
when was the first atom discovered?
200
Who discovered the neutron?
James chadwick
300
All matter is made of atoms. Atoms are indivisible and indestructible. 3) Compounds are formed by a combination of two or more different kinds of atoms.
What was Dalton's atomic theory?
300
Rutherford overturned Thomson's model in 1911 with his well-known gold foil experiment in which he demonstrated that the atom has a tiny and heavy nucleus.
how did ernest rutherford contribute to the atomic theory
300
A normal atom has a neutral charge with equal numbers of positive and negative particles.
What charge does an atom have?
300
Who discovered the electron?
J.J.Thomson
400
The main points of Dalton's atomic theory are Elements are made of extremely small particles called atoms. Atoms of a given element are identical in size, mass, and other properties atoms of different elements differ in size, mass, and other properties. Atoms cannot be subdivided, created, or destroyed.
What were the 5 most important points in Dalton's atomic theory?
400
yes
Is C03 a polyatomic ion?
400
What is the definition of chemistry?
What is the definition of chemistry? the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.
400
8
What is oxygens atomic number?
400
What is this chemical formula? C17H21NO4
cocaine
500
A compound is a pure substance composed of two or more different atoms chemically bonded to one another.
What is a compound?
500
"also known as a molecular ion, is a charged chemical species (ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit."
What is the wikipedia definition of a polyatomic Ion?
500
Aplastic anemia
how did marie curie die?
500
greek
the atom comes from the _ word atomos?
500
sulfuric acid
What is this chemical formula? H2SO4
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