Chemistry- test 3

Elements

100

Most common element

Hydrogen

200

Two elements in Water

Hydrogen and Oxygen

300

Element needed for strong bones?

Calcium

400

Chemical symbol of O

Oxygen

500

Chemical element that symbol is Na

Sodium

What are?

100

everything we see in the universe that we can observe is made of...

elements

200

people who study all things in the universe that we can see are made of

chemist

300

a combination of different elements joined together

compound

400

small particles that make up elements

atoms

500

two or more atoms fastened together

molecule

Experiment

100

what are two things marshmallows are made of

sugar and water

200

what two elements joined together to leave the marshmallow

hydrogen and oxygen

300

what did the water leave as

water vapor/smoke

400

what was left

carbon

500

list two changes you observed during the experiment

-black smoke

-got puffy

-changed color

-hollow inside at the end

How Many?

100

H₂O

H-2

O-1

200

NH₃

Nitrogen- 1

Hydrogen- 3

300

CO₂

Carbon- 1

Oxygen- 2

400

N₂H₄

Nitrogen- 2

Hydrogen- 4

500

NH₄Cl

Nitrogen-1

Hydrogen-4

Chlorine- 1

solid, Liquid or Gas

100

Solid, Liquid or Gas:

Hydrogen

Gas

200

Solid, Liquid or Gas:

Mercury

liquid

300

Solid, Liquid or Gas:

Oxygen

gas

400

Solid, Liquid or Gas:

Gold

Solid

500

Solid, Liquid or Gas:

Calcium

Solid