Atom parts
The 3 parts of an atom are...?
neutrons, protons, electrons
The periodic table has 2 pieces of information on it starting with "atomic". What are they?
atomic number and atomic mass
What do metals conduct well?
electricity and heat
What group are halogens in?
17
Noble gases are in what group on the periodic table?
Group 18
The subatomic particle with the negative charge is...?
Electron
The atomic number refers to the number of what?
protons
What form do most metals take?
Solid
True or false: halogens are very reactive
True
The valence orbits of these atoms is full, making them very what?
stable
This is made of neutrons and protons
nucleus
The periodic table is organized using what 2 categories?
groups and periods
an odd number
Halogens are very reactive because they have an odd number of what?
electrons
Their stability comes from the fact that they do not make what?
ions
When an atom loses or gains an electron it is called what?
an ion
The periodic table is organized in ascending order of what?
atomic number or number of protons
The odd number of electrons in Group 1 allows them to easily become what?
ions
What is a common use for halogens?
to kill microorganisms
Noble gases are used often in what industry?
Lighting
An isotope is formed when an atom has a different number of what?
neutrons
Name 3 categories of elements on the periodic table.
metals (reactive and transition), nonmetals, metalloids, halogens, noble or inert gases,
Transition metals (such as gold and silver) have been commonly used to make what 2 everyday items?
coins and jewelry
Halogen comes from the Greek word meaning what?
forming salts
Halogens take what form?
Gas