Q.1.
How many protons are in the element, "Sodium?"
Q.2.
The second energy level can hold up to, how many electrons?
Q.3.
Which of the following is not possible?
Q.4.
All matter is made of what
Q.5.
The positive particles of an atom are
Q.6.
An atom with atomic number 6 would have how many protons
Q.7.
Particles in an atom that are neutral and have no charge are
Q.8.
How many protons, electrons and neutrons does an neutral atom of Calcium have? Its atomic number isand the mass number is 40.
Q.9.
How many neutrons in C-14?
Q.10.
The------ particle determines the identity of what element you have'
Q.11.
WhIch sub atomic particle vary between isotopes of an element?
Q.12.
Which of the following people said the atom was a solid sphere?
Q.13.
Which of the following is a substance that can not be broken down into a simpler substance?
Q.14.
Ag--and Ag--are two forms of silver with different mass # so they are
Q.15.
What is the mass number and name of an element with 8 protons and 8 neutrons?
Q.16.
The subatomic particle that determines the identity of an element.
Q.17.
What are valence electrons?
Q.18.
What are the maximum number of electrons that go on the first 3 energy levels?
Q.19.
Describe an Electron Cloud?
Q.20.
An element with a mass number ofand an atomic number of 6 has how many protons?