Atoms 1
What are the 3 parts of an atom?
protons, neutrons, and electrons
What charge does a proton have?
positive
Who invented the periodic table of elements?
Dimitri Mendeleev
How do you find the number of protons using the periodic table?
atomic number
What tool do you you use to measure mass?
Triple beam balance
Where are protons located?
nucleus
What charge does an electron have?
Negative
What is the chemical symbol for silver?
Ag
How do you find the number of electrons using the periodic table of elements
atomic number or number of protons
What is volume?
The amount of space an object takes up
Where are neutrons located?
nucleus
What charge does a neutron have?
neutral
How many electrons does potassium have?
19
How do you find the number of neutrons using the periodic table of elements?
How do you know if something has matter?
If they have mass and volume.
Where are electrons located?
outside the nucleus in the electron cloud
what is a molecule?
two or more atoms bonded together
How is the periodic table of elements organized?
By chemical properties
How many neutrons does chlorine have?
18
What is something that does not have matter?
energy, sound, space (vacuum), heat, light
Why don't electrons fly away from the atom?
Because of their negative charge, they are attracted to the positively charged protons
What is the job of a neutron?
They help keep the nucleus stable
What is the rule for capitalization for chemical symbols in the periodic table of elements?
The first letter is always capitalized and if there is a second letter it is always lower case.
How do you calculate the atomic mass/weight of an atom?
Add up the protons and neutrons.
Graduated cylinder