Question

1. what are the characteristics of an extensive property of matter?
2. name three examples of a heterogeneous mixture? cement, pea soup, apple sauce
3. what are the characteristics of an intensive property of matter?
4. give three examples of a homogeneous mixture?
5. the two most important properties of all matter are (?)
6. if a mixture is uniform in composition, it is said to be
7. a measure of the quantity of matter is
8. a solid substance has which characteristics?
9. under ordinary conditions of temperature and pressure, what are the characteristics of a gas?
10. name four of the five stages of matter:
11. name three examples of a chemical change:
12. describe the following processes and what they separate: chromotography, distillation, evaporation and filtration
13. define a chemical, compound, mixture, element, precipitate and a solution:
14. compare and contrast the differences between a physical change and a chemical change and give examples:

Explanation:

1. An extensive property of matter depends on the amount of matter present. Examples include mass and volume.
2. Heterogeneous mixtures have non - uniform composition. Cement, pea soup, and apple sauce are correct examples as they have visible different parts.
3. An intensive property of matter does not depend on the amount of matter. Examples are density and temperature.
4. Homogeneous mixtures have uniform composition. Examples are salt water, air, and stainless steel.
5. The two most important properties of all matter are mass and volume. Mass measures the amount of matter, and volume measures the space it occupies.
6. If a mixture is uniform in composition, it is said to be homogeneous.
7. A measure of the quantity of matter is mass.
8. A solid substance has a definite shape and definite volume due to closely packed particles.
9. Under ordinary conditions of temperature and pressure, a gas has no definite shape and no definite volume, and it expands to fill its container.
10. Four of the five stages of matter are solid, liquid, gas, and plasma.
11. Three examples of a chemical change are burning wood, rusting of iron, and digestion of food.
12. Chromatography separates components of a mixture based on their different affinities for a stationary and mobile phase. Distillation separates components based on differences in boiling points. Evaporation separates a soluble solid from a liquid by vaporizing the liquid. Filtration separates a solid - liquid mixture by passing the mixture through a filter medium that retains the solid.
13. A chemical is a substance with a definite composition. A compound is a pure substance made up of two or more different elements chemically combined. A mixture is a combination of two or more substances that are not chemically combined. An element is a pure substance that cannot be broken down into simpler substances by chemical means. A precipitate is an insoluble solid that forms during a chemical reaction in solution. A solution is a homogeneous mixture of two or more substances.
14. A physical change does not change the chemical composition of a substance, e.g., melting ice. A chemical change results in the formation of new substances with different chemical properties, e.g., burning paper.

Answer:

1. Depends on amount of matter.
2. Cement, pea soup, apple sauce.
3. Does not depend on amount of matter.
4. Salt water, air, stainless steel.
5. Mass, volume.
6. Homogeneous.
7. Mass.
8. Definite shape and volume.
9. No definite shape or volume, expands to fill container.
10. Solid, liquid, gas, plasma.
11. Burning wood, rusting iron, digestion of food.
12. Chromatography: separates by affinity; Distillation: separates by boiling - point; Evaporation: separates soluble solid from liquid; Filtration: separates solid - liquid mixture.
13. Chemical: definite composition; Compound: elements chemically combined; Mixture: substances not chemically combined; Element: cannot be broken down; Precipitate: insoluble solid in reaction; Solution: homogeneous mixture.
14. Physical change: no change in chemical composition (e.g., melting ice); Chemical change: new substances formed (e.g., burning paper).