Metric Conversions
kilogram
Chlorine is an example of what (compound or element)
Element
Subatomic particle with a positive charge.
Proton
Liquid --> Gas
Evaporation
Number on the periodic table that is equal to the number of protons an element has
Atomic number
How many millimeters are in 5 centimeters?
50 millimeters
True/False: homogeneous mixtures are mixtures that all look the same (everything is evenly distributed)
True
Element that has 79 protons.
The vertical columns of a periodic table
The horizontal rows on a periodic table
Periods
How many meters are in 5 kilometers
5,000 m
Burning a piece of paper is an example of what kind of change?
Chemical change
Which type of decay releases an electron?
Beta decay.
Subatomic particle that changes an atoms mass but not the type of atom.
Neutron
Half-life
How many kilograms are in 300 milligrams
.0003 kg
What state of matter has an indefinite shape and an indefinite volume? (Indefinite = changable)
Gas
Number on the periodic table that is equal to the element's protons plus its number of neutrons.
Atomic mass
Weak type of decay that releases the equivalent of a helium atom and can be blocked by paper or clothes.
Alpha decay
Reactions that occur inside the nucleus of an atom
Nuclear reaction/nuclear deacay
Write the following in scientific notation:
0.000954
9.54 x 10-4
Calculate the density of a liquid that has a volume of 50 mL and a mass of 13.66 g.
0.2732 g/mL
It becomes more positively charged.
Specific electron that is located on the outer orbital/ring of an element's model
Valence electron
Version of an element with the same number of protons but different number of neutrons.
Isotope