Group+2

Hi we are Group 2. Our question is: If matter can be weighed how do you weigh gas? Do different gases have different weight? Our names are Mackenzie, Brilee, Stephanie, Bella and Tayla.

How to weigh gas. Put the gas in a container at average temperature and amount, then put the container on scales, then subtract the weight of the container.

Everything around us is made of groups of [|atoms] connected together into packages called molecules.Molecules are made from atoms of one or more [|elements]. Some molecules are made of only one type of atom. Other molecules are very large and are made of hundreds of atoms.Even large molecules are so small that you would not be able to see only one molecule of something. But when thousands of molecules are together, they might look like a glass of water, a tree or even your computer screen!

Different gases can have different weights because of the molecular weights. If molecular weight is sixteen for oxygen, it will be sixteen times two for o //**__2__ .**// 16x2=32 Thirty-two would be one mole. If you weighed it average, it would be 32 grams.


 * //__I have a question: Does mixing a gas to another one affect the weight? From Bella__//**

This is a PDF to show you the different weights of gas

media type="file" key="last chrysalis 017.mov" width="300" height="300" We have found these links to websites about weighing gas.

This is instructions on how to weigh gas.http://www.chalkbored.com/lessons/chemistry-11/weighing-gases-lab.pdf This is about different weights of gas.http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/weighgas.html This is about the density of gas and how it affects the weight. http://www.elmhurst.edu/~chm/vchembook/123densitygas.html grams per mL ||
 * **Densities of Common Elements and Compounds** ||
 * Substance || Density
 * Hydrogen gas || 0.000089 ||
 * Helium gas || 0.00018 ||
 * Air || 0.00128 ||
 * Carbon Dioxide || 0.001977 ||
 * Water Vapour || ? ||

Here is a table about the weights of gas.

meaning of molecular weight
The average weight of a molecule of an element or compound,(gas) measured in units(type of measurement).

Yes ||
 * = **Ask a Question and List Possible Variables for Testing** ||
 * **What we want to find out:** || How do you weigh gases? ||
 * **Things we could find out:** || Do gases have different weight?
 * **Things we could measure:** || We could weigh gas. ||
 * = **Select one variable to investigate and measure. Keep the rest the same.** ||

and the gas || different types of gas. ||
 * = **Choose a Variable** ||
 * **We will change:** || The __container__
 * **We will measure:** || We will weigh
 * **The rest we will keep the same:** || Yes ||


 * = **Ask a Question and Make a Prediction** ||
 * **When we change:** || n/a ||
 * **What will happen to:** || n/a ||
 * **Make a prediction:** || Different Gases have different weight ||
 * **Because:** || Of the different molecular weights ||


 * = **Make a Plan of How to Carry out the Investigation** ||
 * **List the equipment:** || # bag of balloons: Bella
 * 1) balloon pump: Steph
 * 2) baking soda: Brilee
 * 3) Malt vinergar: Tayla
 * 4) beer bottle: Steph
 * 5) funnel: Brilee
 * 6) water
 * 7) a plastic pump or h2go bottle: Macka
 * 8) Electric frying pan: Mr P
 * 9) Scales: Mr P ||
 * **What we are going to do:** || # Research molecular of different gases.
 * 1) Present these as a table.
 * 2) Choose the easist gases to demonstrate their weights. ||


 * = **Record Your Results** ||
 * **What we changed:** || The amount of water in the bottle and the amount of vinegar and baking soda. ||
 * **What we measured:** || The weight of the balloons. ||
 * **Results:** || The water vapour turned into water in the balloon so it was heaviest. Gas can be weighed on scales and they are different weight. ||

How do you get water vapour in a balloon? Do you have to have to have special scales to weigh gas? How do you weigh a helium balloon without it floating away? || weight changes, we could weigh other gases. ||
 * = **Find Patterns in the Results** ||
 * **What we changed:** || Look up ||
 * **The results were:** || Look up ||
 * **Because:** || of the molecular weights ||
 * **Questions we still have:** || Does adding a gas to another gas make it heavier/lighter?
 * **Other investigations we could carry out:** || We could try to mix oxygen and CO2 in a balloon and see if the

Share Your Findings:
Draw a graph, if appropriate. Graphs though are not alwasy the best way to display results. Your group will have to decide what is appropriate for the data collected. For example, your group might choose to use charts, diagrams, or written descriptions.