Atomic Mass Math
What is the atomic mass of Oxygen? Rounded
16
Helium is an example of a....
Noble Gas
What state of matter are most molecules and atoms at room temperature?
solid
Which subatomic particle has a negative charge?
electron
melting
physical change
How many protons does Fluorine-9 have?
9
Halogen
Which has a higher temperature, a gas of an element or a fluid of an element?
gas
Which subatomic particle is positively charged?
Proton
Metallic Luster
physical property
How many neutrons does Sulfur-16 have?
16
True or false, metalloids are better at conducting electricity than metals.
False
What is it called when a solid turns into a liquid?
melting
Which subatomic particle is neutral?
Neutron
breaking a pencil in half when Chance says 6-7 one too many times
physical change
How many Neutrons does Cu-29 have?
34
Why are elements put near each other on the periodic table of elements?
They share similar properties
What is it called when a liquid turns into a gas?
vaporization, evaporation, boiling
Which two subatomic particles are found in the nucleus?
proton and neutron
chemical property
An unknown element has been found to have an atomic mass of of 126.90447 and 74 neutrons. How many protons does it have AND what element is it?
53-Iodine
Describe two properties of metals
metallic luster
good conductors of heat
good conductors of electricity
solid at room temperature
etc.
What is it called when a gas turns into a liquid?
condensation
If an atom has 7 protons and 6 electrons, what would its net charge be?
+1
radioactive
chemical change