Who's that Poke--I mean, Scientist
Splitting the Atom
You are an absolute Unit
Instruments of mass measurement
Miscellaneous
100

This scientist said that it is a law that the mass before and after a reaction must stay the same. 

Antoine Lavoiser

100

The subatomic particles in the nucleus are made of even smaller particles called these

quarks

100

Instead of having to write over and over the electric charge of the electron as -1.6 x 10^-19 Coulomb, they much rather write it as this.

1- or -1

100

Before becoming digital, these used to have 3 different hands that turned around in a circle.

(Analog) Clock

100

A simple explanation of Hypothesis is this

An Educated Guess

200

After millennia, this scientist re-ignited the discussion about atoms 

John Dalton

200

This is the smallest of the 3 subatomic particles and cannot be found in the nucleus

Electron

200

The US uses Fahrenheit to measure temperature, while the rest of the world uses this

Celsius

200

When making Rock Candy we poured the boiling sugary water in this heat resistance container.

Beaker

200

Sounds like a vegetable bulb, but these are in fact atoms with extra electrons

Anions

300

One of the atomic models sounds like a tasty treat. It was proposed by this scientist, whose name sounds like a Spider-Man character.

J.J. Thomson

300

Scientist are able to discover and study unimaginable things of the universe, but when it comes to naming things they fumble the ball. Like naming this particle with neutral charge.

Neutron

300

There are about pi x 10^7 of these in a year.

seconds

300
Before calling them electrons, the subatomic particle was known as this, like the tube that Thomson used.

Cathode Rays

300

If we combine two ions and obtain a neutral compound, chemists call it this. 

Salt

400

Using alpha particles and a gold sheet, this scientist discovered the proton. What an "earnest" way of doing so. 

Ernest Rutherford

400

Making up most of the weight of the atom, no wonder we call the sum of these two the "mass number"

protons and electrons

400

The length of an atom is 1 Angstrom, which is 10^-10 (or one ten-billionth) of this.

meters

400

Atoms are extremely small, impossible to view without a Scanning Tunneling "This". It's kind of a reverse telescope.

(Electronic) Microscope

400

Deuterium and Tritium are the only named isotopes. They are isotopes of this element. 

Hydrogen

500

Light moves fastest in a vacuum and slows down when in air or water or another medium. When light goes faster than what it should in that medium, a blue glow is radiated. It is named after this Russian scientist.

Pavel Cherenkov

500

This microscopic cartoon cartoon character created an atomic explosion by tearing something apart "bit by bit, molecule by molecule, atom by atom."

Sheldon J. Plankton

500

The speed of light is 300,000 km/s or 186,000 mps. Instead of having to write that in their equations, scientists use this lowercase letter.

c
500

This instrument has a total of 88 keys, 52 of which white and 36 are black.

(Grand) Piano

500

This Italian maker from the 17th century is highly regarded as the inventor of the piano.

Bartolomeo Cristofori