Chemistry

A chemical formula is most like a ?

• element formula

• a recipe

• the periodic table

• a mixture

A proton is a(n)

• atom

• nucleus

• sub-atomic particle

• really big

What does the 3 represent ...Fe₃

• a subscript for Iron

• atomic number

• atomic mass

• number of energy levels

How do elements become a compound?

• call each other

• electric reaction

• electron reaction

• chemical reaction

How many Oxygen molecules are represented...C₆ H₁₂O₆

• None

• 6

• 12

• 18

The chemical formula for 2 Hydrogen and 6 Chlorine looks like...

• 3HCl

• 2HCl₃

• 6HCl

• 3HCl₂

The atomic number for Lithium is 3 and the atomic mass is 7. How many protons are in the nucleus?

• Protons are not in the nucleus.

• 7

• 3

• 4

What makes up the atomic mass?

• number of protons and neutrons in the nucleus?

• number of neutrons in the nucleus.

• the number of protons, neutrons and electrons in the nucleus.

• number of electrons in the first energy level.

Two chemicals were mixed together and the product turned from red to black and bubbled. Was this a chemical reaction?

• nope, color changes are not an indicator

• yep, color changes are an indicator

• no, it's just a cool effect

What is a charged atom called?

• Ion

• Proton

• Atomic Number

• Stable