Matter Class #4

Objective: Particle Diagrams for solids, liquids, gases, atoms, molecules, compounds, and mixtures. Then finish up Lab # 5,6, and 7.

Lots of drawing today, get paper, put on thinking hats.

Matter HW #2 due Friday.

A particle diagram shows the idea of chemical substances in a cartoon sort of way.The diagrams are not realistic in shape, but with some imagination and thinking, you can understand what they are going to show.

You need to be aware of these vocabulary words to move forward. Think, or ask now.

SOLID – LIQUID – GAS

ATOM – COMPOUND – MIXTURE – DIATOMIC ELEMENTS

These diagrams will show all seven of these, you need to be able to recognize them, and draw examples of each of these seven.

Atoms, diatomic elements, molecules… which are which?

molecules

atoms

diatomic elements

2 kinds of atoms

Maybe

H2, O2, N2, Cl2, etc.

These might be CO2

These might beNH3

Particle diagrams show atoms, diatomic elements, or molecules.

They can also show phases, depending upon how the particles are arranged in the box.

LEFT TO RIGHT: Gas particles don’t touch and “float” in space. Liquids are at the bottom, but not arranged orderly.

Solid matter has particles in a very orderly pattern, that does not conform to the shape of the container.

Could this be

Ammonia NH3

Carbon Dioxide CO2

Water H20

Methane CH4

Could this be

Phosphorous pentachloride PCl5

Carbon Monoxide CO

Sulfur trioxide SO3

Butane C2H6

When 4.0 g hydrogen combines rapidly with 32 grams of oxygen in the air to form into wata, how many grams of this dihydrogen monoxide form?

When 4.0 g hydrogen combines rapidly with 32 grams of oxygen in the air to form into wata, how many grams of this dihydrogen monoxide form?

36 grams of course

Matter cannot be created or destroyed in a chemical reaction, or physical change.

4.0 g + 32 g = 36 g

A. Atoms only

B. Atoms and molecules

C. Molecules only

D. Diatomic elements

E. A mixture

F. A compound

Which of these could be in the box?

H2, He, CO2, H2O, CO, CH4

Which of these could be in the box?

H2, He, CO2, H2O, CO, CH4

That is an atom, could be He, or any other single atom.

That is a compound with a 1:1 ratio, maybe CO

This is a diatomic element, maybe H2

Read the MATTER BASICS tonight. Notes due by MONDAY.

Matter HW #2 due on Friday.

Co, Ne, Hg, H2O, Au, and Mg are the substances we will use for these questions:

1. which has the highest boiling point? Cobalt at 3143 K which is 2870 °C2. Which will expand the most when heated? The gas neon

3. Which can be compressed the most? The gas neon4. Which are the least likely to be compressed? Cobalt, mercury, water, gold, and magnesium (gases compress easily)

5. Which will melt in your mouth? Only the water6. Which will fit into any shape container you place it (at 25°C) neon gas, or liquid water 7. Which will FILL any container you place it into (at 25°C) The gas neon

How many atoms are in each of these compounds?

H2SO4 7 C6H12O6 18 NaCl 2 H3PO4 7 C10H22 32 CH4 5 KI 2