AIM: How can we identify the chemical & physical properties of matter? (PSKI#3)

5/10/13DO NOW:1. Pick up today’s quiz &

finish it

HOMEWORK:1. Read p. 81-85 in the PS

ILS REVIEW BOOK.2. Answer Questions #1-43

on p. 87-95 on your scantron

3. ILS #2 Test Corrections & get it signed

DUE- Monday by 8 AM

Describe the shape & volume of solid, liquid, & gas. Solid – definite shape, definite volume Liquid – no definite shape, definite volume Gas – no definite shape, no definite volume

Compare how the particles are packed in a solid, liquid, & gas. Solid – tight Liquid – farther apart Gas – loosely packed

Describe the particle movement in solid, liquid, & gas. Solid – shaking in place Liquid – moving a little faster Gas – fast moving

Describe the phase change melting. Solid to liquid Heat absorbed (gained) Particle move farther apartDescribe the phase change freezing. Liquid to solid Heat released (removed) Particles move slowerDescribe the phase change evaporation. Liquid to gas Heat absorbed (added) Particles move fasterDescribe the phase change condensation Gas to liquid Heat released (removed) Particles move slower

What is Solubility?How well a substance can

dissolve.What is a solute?The substance being dissolvedWhat is a solvent?The substance doing the

dissolvingIdentify the solute & solvent in the following solutions:Salt water – Salt (solute) Water

(Solvent)Kool-aid Drink – Kool-aid Mix

(solute) Water (solvent)

How does temperature affect solubility? The higher the temperature of the

solvent, the more soluble the soluteHow does surface area affect solubility? The greater the surface area of the

solute, the faster the solute will dissolve.

How can you increase the surface area of a substance (sugar cube)? Break is up into smaller pieces Crush itHow does stirring affect solubility? When a solution is stirred, the solute

dissolves faster

20o

70g

45o 70o

Define weight.Weight is a measure of the pull of gravity on an objectHow does the amount of gravity affect weight?The greater the gravitational force acting on an object,

the greater its weight.Why do we have less weight on the moon?We have less weight on the moon because there is less

gravity on the moon than on earth.

What is buoyancy?The upward force of a fluid

Identify the physical properties of matter.Color, phase of matter,

density, conductivity, boiling point, odor, mass, solubility, hardness, freezing point

Identify the chemical properties of matter.FlammableReactivity

ILS Questions Which property of a substance indicates whether the substance is a liquid or a solid at room temperature?

(1) melting point(2) electrical

conductivity(3) flexibility(4) solubility

Under which conditions would a sugar cube dissolve most quickly when placed in a liter of water at room temperature?

(1) A whole sugar cube is added and the water is stirred.(2) A whole sugar cube is added and the water is not stirred.(3) A crushed sugar cube is added and the water is stirred.(4) A crushed sugar cube is added and the water is not stirred.

ILS QuestionAll of the liquid from a test tube is poured into a beaker, as shown in the diagram below.

Compared to the liquid that was in the test tube, the liquid in the beaker has(1) a different volume, but the same shape(2) a different volume and a different shape(3) the same volume, but a different shape(4) the same volume and the same shape

Diagrams A and B show models of how the molecules of the same substance are arranged in two different phases of matter.

Which phases of matter are represented by diagrams A and B?

ILS QuestionThe data table below shows that as the pressure of a gas sample was changed, the volume of the gas changed. The pressure was measured in atmospheres (atm) and the volume was measured in milliliters (mL).

According to the data table, as the pressure of the gas increases, the volume of the gas

(1) decreases(2) increases(3) remains the same

ILS QUESTIONSThe diagram represents four processes, labeled A, B, C, and D, that occur when water changes phase.

Which process is represented by B?(1) condensing (3) freezing(2) evaporating (4) melting

Which two processes increase the motion of the molecules?(1) A and B (3) C and D(2) B and C (4) D and A

ILS QuestionThe graph shows the solubility curves for a solid solute and a gaseous solute.

How many grams of the solid solute will dissolve in 100 grams of water at 25°C?

Describe the relationship between water temperature and the solubility of the gaseous solute from 0°C to 15°C.

State one way to increase the rate at which a solid solute dissolves in 100 grams of water.