Atomic Theory
Name the scientist who was involved in the gold foil experiment and what did he discover?
Rutherford and Proton
Positively charged particles
proton
What are the most reactive group of metals?
Alkali
How many electrons(max) can be placed in first shell?
2
particles in a matter are in constant motion (T or F)
T
Who discovered neutrons ?
chadwick
No charge on the particle
Neutron
Where are metals located in the Periodic table(PT)
Left side of the staircase
How many electrons can shell 2 hold?
8
The space between particels depends on its ______
State of matter
Which theory explained that atoms are smallest particles that are indivisible
Daltons atomic theory
Negatively charged particle
Electron
Where are the non metals located in the PT?
On the right side of the staircase
How many electrons does neon atom have?
10
When energy is added the particles ________ energy
Gain
Who stated that electrons are floating in a pool of positive particels like the raisins in a bun
J.j Thomson
What is the overall charge on the nucleus
Positive
What is the most reactive non metal group ?
Halogens or group 17
What subatomic particles are in the nucleus in Bohr's model of atom
Protons and Neurtrons
When energy is removed particeles___ energy
lose
Who explained that electrons revolve around nucleus in specific orbits
Bohrs model
What makes atoms electrically neutral?
same number of protons and electrons
what group of elements are unreactive or do not react?
Noble gases or inert gases
Electrons are present in ______ around the nucleus
Shells /orbits/ energy levels
In solids the particles are ____ about their position and in liquids particles _____past each other and in gases they move _____
vibrate
slide
freely