Chapter 11 Review Start

1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 Jeopardy 4 Parts of Definitions Size/structure of atoms Definitions Properties of atoms. Parts of atom. Who Discovered it? 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4 Jeopardy

1 What is an electron? This particle inside an atom is nearly 2000 times smaller than the protons and neutrons. Click here for answer back

2 What are neutrons? These are in the nucleus of an atom that are about the same size as protons. Click here for answer back

3 What are protons? An atom wants to maintain the same number of __________ as electrons to stay electrically balanced. Click here for answer back

This is what is between the nucleus of an atom and the electrons. 4 What is NOTHING? This is what is between the nucleus of an atom and the electrons. Click here for answer back

1 What is an atom? The smallest particle into which an element can be divided and still be the same substance . Click here for answer back

2 What is an ion? When an atom gains or loses an electron it becomes this three letter word for a charged particle. Click here for answer back

3 What is atomic number? The number of protons in the nucleus of an atom determines its ______ ______. Click here for answer back

4 What are isotopes? An atom of an element that has the same number of protons but different numbers of neutrons is called ___________. Click here for answer back

1 What are electrons? These are negatively charged particles in an atom. Click here for answer back

2 What are neutrons? These particles in the atom’s nucleus do not have any charge at all. Click here for answer back

3 What are protons? These are positively charged particles in the nucleus of an atom. Click here for answer back

4 What are atomic mass units (a.m.u.’s) ? The unit scientists came up with to measure the mass of an atom. Click here for answer back

What is the nucleus? 1 Name of number 3. Click here for answer back

What is an electron? 2 Name of number 5. Click here for answer back

What is a neutron? 3 The name of number 2. Click here for answer back

What is a proton? 4 The name of number 1. Click here for answer back

1 Who was Democritus? The person who was the first to believe there are such things as atoms - - things not able to be divided. He named them atomos meaning not able to be divided. Click here for answer back

2 Who is J.J. Thomson? The person who discovered electrons. Click here for answer back

3 What are electron clouds? Many scientists help to discover the present model of the atom. In it electrons are not so much in shells but in electron _________ . Click here for answer back

4 Who was Rutherford? The person who discovered the nucleus of an atom and did the gold foil experiment. Click here for answer back