periodic table
How do you find an element's atomic mass?
Add the number of neutrons and the number of protons together
These are found on the right side of the periodic table
What is metalloids and non metals
state that matter is neither created nor destroyed, only changed in form
What is the Law of Conservation of Matter
Made up of only one kind of atom
What is an element
Al
What is aluminum
This is the number of protons in the nucleus of each atom of an element
What is the atomic number
This is an uncharged particle in the nucleus of the atom
What is a neutron
Anything that has mass and takes up space
What is matter
These are on the periodic table
What is an element
Mg
What is magnesium
This is the sum of the an atom's protons and neutrons
What is mass number
These are atoms of the same element that have different numbers of neutrons.
What is an isotope
True or False- Hydrogen is not matter
What is true
These are shiny, good conductors of heat and have luster
What is a metal
Au
What is gold
This is the weighted average of mass of an element
What is atomic mass
This is a positively charged particle in the nucleus of the atom
What is a proton
True or False- heat is matter
What is false
These are poor conductors of heat and electricity. They are dull in appearance
What is a non metal
U
What is uranium
What does the term 'valence electrons' mean? (2 things)
number of electrons on outermost shell, tells how reactive an element is
This is a negatively charged subatomic particle
What is an electron
True-or False- Light is matter
What is False
Elements that have characteristics of metals and non metals
What is a metalloid
Pb
What is lead