Chemistry Flashcards
What is matter?
An object that takes up space and has mass
What does the word atom mean?
Cannot be divided
What Is an element?
A substance hat is made entirely from one type of atom
What did John dalton come up with?
1) matter is made of atoms
2) atoms cannot be divided
3) atoms of an element are the same
4) different elements are different atoms
What did William crooks make?
A glass tube with a t in the center with a negative on one side and a positive on the other which made light
Why was James Thompson important?
He took William crooks experiment and took different elements and tested them out
Where did the word electricity come from?
Thompson
What i San electron
A negatively charged particle
Why is Ernest Rutherford famous?
Gold foil experiment
Shot out particles with a receptor and a gold foil in the center of the receptor the gold foil shot the particles onto the receptors (thought the foil was hollow)
What is the nucleus made up of?
Protons and neutrons
What are protons and neutrons charged?
Protons and positively charged
Neutrons are neutral charged
Where are the electrons located?
In the electron cloud
