Chemistry

Density

100

^{Mass/volume = Density}

What is the chemical formula for Density?

200

Solve.  Mass 20 g  Volume 10 mL

What is 2 g/mL?

300

i have definite shape and definite volume

What is a solid?

400

when a solid goes directly to a gas

What is Sublimation?

500

Density = 20 g/mL    Mass = 500 g  Volume ?

What is 25mL?

Matter

100

The smallest parts of an atom

What are protrons, neutrons and electrons?

200

They make up all solids, liquids, and gases.

What is an Atom?

300

A pure substances that cannot be broken down by chemical methods into smaller components.

What is an Element?

400

Made up of two or more types of elements

What is a compound molecule?

500

Made up of 2 of the same element

What is an Elemental Molecule?

Periodic Table

100

The one of a kind element

What is Hydrogen?

200

We are close to being noble but just missed it by one.

What are Halogens?

300

Positive ions

What are Cations?

400

My Atomic Number is #4 and my atomic mass is close to 8.  I forgot my symbol and name can you help me?

What is Beryllium (Be)?

500

I am happy because I have two parts of one element and one part of another element

What is H₂O?

Reactions

100

Mentos and Coke

What is a physical Reaction?

200

These are formed when reactants are used up

What are products in a chemical reaction?

300

Sublimation is an example of this type of reaction

What is physical reaction?

400

Malleability

What is a physical reaction?

500

Combustibility

What is a chemical Reaction?

Balanced Equations

100

Matter can not be created or destroyed

What is the Law of Conservation of Matter or Mass

200

Molecules or Elements to the left of chemical equations

What are reactants?

300

2H₂ + O₂ > 2H₂O

H=           H=

O=           O=

What is 4 and 2 for both reactants and products because it follows the law of conservation of Matter?

400

3H₂O₂

hat is 6 atoms of Hydrogen and 6 of Oxygen?

This is three molecules of hydrogen peroxide

500

Co2

What is an elemental molecule of Cobalt?