Tiny particles
What are the 2 parts of an atom?
What are the nucleus and the energy levels?
What subatomic particles are about the same size and mass?
What are protons and neutrons?
What is 2
The rows going from left to right on the periodic table are called
periods
If an atom has 6 protons, 6 electrons and 7 neutrons, what is the atom's atomic number?
6
What are the 3 subatomic particles that make up an atom?
What are protons, neutrons, and electrons?
What is the charge of a proton?
What subatomic particle is always the same number as protons?
What are electrons?
The number of protons plus neutrons in the nucleus is known as the
What is the Mass Number
If the mass number is 13 and the atom has 7 neutrons, how many protons does it have?
6
What subatomic particle determines the identity of an atom?
What is the charge of a neutron?
What is (no charge) neutral?
How many electrons can fit on first energy level?
What is 2?
What is an atom that has a different # of neutrons that a normal/neutral atom?
What is an isotope?
If an atom has 9 electrons, how many protons does it have?
9 protons
What 2 particles is found is the nucleus?
What are protons and neutrons?
What is the charge of an electron?
What is (-)negative?
1/1840 the mass of a proton
How many electrons can fit in the outermost energy level?
What is 8?
Which law states that matter cannot be created nor destrooyed?
What is the law of conservation?
20 neutrons
What particle(s) is found in/on the energy levels/electron cloud?
What are electrons?
where is most of the mass in an atom?
What are the outermost electrons called involved i bonding with other atoms?
What are valance electrons?
The least reactive group of elements is
What is Group 8A?
How many valance electrons do elements in Group 2A have?
2