Atoms and Their Parts
What part of the atom is positively charged?
Proton
The Periodic Table is a list of _________
Elements
Atoms are usually neutral. Atoms that have either a positive or negative charge are called what?
Ions
The class of the periodic table that is good at conducting electricity and heat
Metals
What does the atomic number of an element tell you?
Number of Protons
Which part of an atom is negatively charged?
Electron
What is the number at the top of the element card called?
Atomic number
What do we call atoms with a different number of neutrons (which causes the atom to have a different mass)?
Isotopes
The class on the periodic table that is not good at conducting electricity
Nonmetals
What makes elements different from each other?
Number of protons
What part of the atom has no charge?
Neutron
What does the number on the bottom of the element card mean?
Atomic mass
Electrons on the outermost shell of the atom
Valence electrons
The class on the periodic table that varies in its ability to conduct electricity
Metalloids
The scientist that organized the Periodic Table
Mendeleev
What is the middle part of an atom called?
Nucleus
Which 2 subatomic particles contribute to the mass of an atom?
Protons and Neutrons
If an atom of Chlorine has an overall neutral charge, how many electrons does it have?
17 electrons
What are the columns of the periodic table called?
Groups
If an atom easily gives up valence electrons, is it a good or bad conductor of electricity?
Good conductor