MIXTURES Ch 5 3 PROPERTIES OF MIXTURES A
- Slides: 16
MIXTURES Ch. 5 - 3
PROPERTIES OF MIXTURES A mixture is a group of two or more substances that are not chemically combined. • Example: Toppings on a pizza, glass of tea, bag of assorted cookies, & air
NO CHEMICAL CHANGES Each substance in the mixture has the same properties it had before. • Mixtures can be physically separated.
DISTILLATION • Distillation is separation through boiling. • Here saltwater is being separated.
MAGNETS • Magnets can be used to separate a mixture of metals. • Some metals, like aluminum, aren’t magnetic.
CENTRIFUGE • A centrifuge separates mixtures by the densities. • Heavy things sink to the bottom and light rise to the top.
Ratio of the Components The substances in a mixture do not have a definite ratio.
Heterogeneous Mixture • The different substances are easy to see. • One doesn’t dissolve into the other.
Homogeneous Mixture • It has the same appearance throughout the mixture. • The tea has dissolved into the water.
SOLUTIONS • A solution is a mixture that appears to be a single substance but is made of two or more substances that are distributed evenly.
Particles in Solutions • The particles in a solution are so small they will not come out of the solution. • They can not be filtered out. • They will not scatter light.
Concentration of Solutions • A measure of the amount of solute dissolved in a given amount of solvent is concentration.
Solubility * Solubility is the ability of one substance to dissolve into another. • It increases as temperature increases. • Like sugar into water
Examples of Solutions Soft drinks are liquid solutions. Air is a solution that is a gas. Steel is a solid solution.
LET’S TRY IT!
- Properties of mixtures
- Extensive examples
- Is smell a physical property
- Examples of flour mixtures
- Can sulfur and water be separated by filtration
- Common homogeneous mixtures
- Mixtures and solutions quiz
- Are solutions homogeneous
- Are all solutions homogeneous mixtures
- Elements compounds and mixtures quiz
- Variable composition
- Different methods of separating mixtures
- Alligation rule for 2 mixtures
- Separation funnel diagram
- Separating mixtures grade 7
- Mixtures
- 14.4 gases mixtures and movements answer key