Chemistry

Light

100

What does this symbol λ represent?

Wavelength

200

What do you call an electron with a lot of energy?

Excited

300

What is the speed of light?

3*10^8 m/s

400

What does h represent when used to find the energy of a wave?

Plank's Constant

500

What kind of light is strong enough to damage your DNA?

Ultraviolet light

Atoms

100

Where are neutrons in an atom?

The nucleus

200

What is the word for an electron that is separated from its atom?

Ion

300

What is the first energy level of an atom called?

Ground state

400

What do you call electrons on the furthest energy level of an atom?

Valence electrons

500

How many protons do sodium atoms have?

11

Reactions

100

What do you call a property of a substance that you cannot find without changing said substance's composition?

Chemical property

200

What kind of property is luster?

Physical property

300

What do you call a bond in which two non-metals share electrons?

Covalent bond

400

What is the word for a positively charged ion?

Cation

500

What do you call it when you add or remove electrons from an atom to make it more like its closest noble gas?

Stabilizing