Elements
Compounds Atoms
Molecules
Metal or Non-metal
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Grab Bag
ALL TEAMS DO 500 point question
100

Things that can be found on the periodic table 

an element 

100

How can you experimentally tell if something is ionic or covalent? 

What would be ionic? What would be covalent? 

If it conducts electricity it is ionic and has a metal in it. 

If it doesn't conduct electricity, it's covalent - no metals. 

100

CO

Carbon monoxide 

100

Pure or Mixed? Element or compound? If mixed, heterogenous or homogenous?  


HN03

pure, compound 

100

Name this: 

diphosphorus hexaoxide 

P2O6

200

Basic unit of a chemical element 

an atom

200

How can you tell from the periodic table if something is a metal or non-metal?

Metals are below the stairs. Non- metals, above the stairs plus H. 

200

CaO

calcium oxide 

200

Pure or Mixed? Element or compound? If mixed, heterogenous or homogenous? 

Sb (antimony)

pure, element 

200

dinitrogen tetrahydride 

N2H4

300

Groups of two or more atoms help together by chemical bonds.  

EX:H20, O2, NaCl

Molecule 

300

Ionic or Covalent? and name 

SiF4

covalent

Sulfur tetrafluoride 

300

Al2S3

Aluminium trisulfide 

300

Copper wire 

pure, element Cu

300

Na2S

Sodium Sulfide 

400

These are examples of: 

H20

CO2

CH4

Molecules OR compounds 

400

Ionic or covalent and name? 

CaBr2

Ionic 

calcium bromide 

400

H20

dihydrogen monoxide 

400

Pure or Mixed? Element or compound? If mixed, heterogenous or homogenous?  


fresh squeezed lemonade 

 heterogeneous mixture 

400

A chemist decomposes 150.0g of water (H20).  They find that 14.6 g of hydrogen is made, how much oxygen is produced? (use sig figs)

150.0g-14.6g = 135.4g of oxygen

(go with least precise) 

500

What is ozone? O3

molecule

500

Ionic or covalent and name 

RbCl

ionic 

Rubidium chloride 


500

N4H6

tetranitrogen hexahydride

500

Pure or Mixed? Element or compound? If mixed, heterogenous or homogenous?  

C6H12O6

compound 

500

Show how the law of conservation of mass is proven when 28.4 grams of carbon react with 7.08 grams of hydrogen, natural gas that is burned in a gas stove is produced.  There is NO leftover carbon or hydrogen when these quantities are used.  How much of each would you need to make 246.0 g of natural gas? 

C = 197 g

H = 49.0 g 


1.Find total mass first:

28.4 g C + 7.08 g H = 35.08 total g of natural gas = SF = 35.5 g

2. Find ratio

246.0g/35.5g = 6.93 (dimensionless quantity) 

3.  Find new quantity based on 6.93 x bigger

28.4g x 6.93 = 196.8 g of C = SF = 197 g of C

7.08 g x 6.93 = 49.06g = SF = 49.0 g of H 


197+49.0 = 246.0g

***Conservation of mass means no matter was created nor destroyed.