phase of matter
What can you add to change a solid into a liquid?
heat
what can affect a gas pressure
temperature, volume, and amount of gas
are electrons positive or negative charge?
Negative
what is the center of an atom called?
The nucleus
In what section would Noble Gases be found?
Group 18
What state of matter has a definite shape?
solid
What is the relationship between pressure and volume gas?
As the pressure on a gas increases, the volume of the gas decreases?
what is the total number of electrons in an atom of potassium?
19 electrons
how many charges does a neutron have?
none
What symbol does potassium use on the periodic table?
K
To change a liquid to a solid, what do you add?
cold
True or false, Gas molecules are far apart and often interact with each other
How does an electron gain energy?
By absorbing light
What has to least atomic weight?
hydrogen
What elements is in group 17? (Bromine, Fluorine, chlorine, iodine, astatine, Tennessine)
halogens
When a gas changes into a liquid it is called what?
Condensation
what is partial pressure
The pressure that is exerted by the gases in the mixture
what are electrons made out of?
They are made out of nothing.
What are all elements composed of?
atoms
What element has the most atomic radius?
francium
what's it called when a solid immediately changes into a gas?
sublimation
which law gives the pressure of gases to the kelvin temperature if the volume remains constant?
Gay-Lussac's law
What is an element’s atomic number equal to?
protons
How do you determine the mass number of an atom?
By the equal number of protons and number of neutrons
What does the atomic number mean?
The number of protons in the atom