Download Matter Problems Indicate whether each of the following is a pure

Matter Problems
1. Indicate whether each of the following is a pure substance or a mixture: table salt,
sugar, fruit salad, prepared instant coffee, iron, steel, air, and oxygen.
2. Indicate whether each of the following is homogeneous or heterogeneous: oil and
vinegar salad dressing, mayonnaise, copper, blood, and water from the ocean.
3. What are the 2 basic types of combinations of matter?
4. Which general type of matter is made up of only one type of atom or molecule?
5. Which general type of matter has properties that change with the proportions of
the substances making it up?
6. Name the 2 types of pure substances.
7. Name the 2 types of mixtures.
8. Which type of matter consists of only one kind of atom?
9. Which type of matter consists of 2 or more different atoms chemically reacted
together?
10. Which type of mixture has its components uniformly distributed throughout?
11. Which type of mixture has components that are not uniformly distributed?
12. Can all pure substances be separated? Explain. If so, how?
13. Can all mixtures be separated? Explain. If so, how?
14. Make a table identifying each of the substances below as pure substances or
mixtures, then classifying them further as either elements, compounds,
homogeneous mixtures, or heterogeneous mixtures: sodium chloride (table salt),
an apple, plutonium, carbon monoxide, acid rain, calcium, smog, paint, ammonia,
calcium sulfide, gold, chicken soup, milk, blood, air, methanol, tantalum, argon,
iced tea, silver, orange juice, sodium bicarbonate (baking soda), ammonium
chloride, spaghetti sauce, methane, antimony, salad, the atmosphere, carbon
dioxide, potassium, chili, and sulfuric acid.
15. Classify the following materials as elements, compounds, or mixtures: iodine,
mercury, brass, distilled water, tap water, cigarette tobacco, propane gas, dry ice,
a diamond, sucrose (sugar), and bronze metal.
16. Indicate which of the following properties of sulfur are physical and which are
chemical, and, for the physical properties, identify each one as being either
intensive or extensive: yellow color, brittle solid, burns in air with a blue flame,
has a mass of 5 g, does not dissolve in water, is odorless, has a density of 2.0
g/mL, is soluble in liquid carbon disulfide, melts at a low temperature when
heated, combines with iron metal to form iron sulfite, reacts with copper metal to
form a black solid, and has a volume of 3.5 cm3.
17. Indicate which of the following properties are physical (include
intensive/extensive) and which are chemical: blue color, density, flammability,
solubility, reacts with acid to form hydrogen gas, supports combustion, sour taste,
high melting point, reacts with water to form a gas, hardness, low boiling point,
can neutralize a base, luster, and odor.
18. Indicate which of the following are physical changes and which are chemical
changes: kicking a football, milk spoiling, rusting iron, cutting paper, making a
cloth from cotton, tarnishing of silver metal, melting butter, dissolving sodium
hydroxide pellets in water, reacting hydrochloric acid with potassium hydroxide,
slicing a piece of sodium, heating water and changing it to steam, decomposing
potassium chlorate into potassium chloride and oxygen gas, evaporation, ice
melting, sugar dissolving in water, wood rotting, pancakes cooking on a griddle,
grass growing, inflating a tire, food digesting, water being absorbed by a paper
towel, dynamite exploding, breaking the windshield of a car, developing
photographic film, combustion of coal in a furnace, excavation of earth,
electrolysis of water, expansion of steel metal in a bridge in hot weather,
condensation of water vapor on a mirror, mothballs disappearing over time,
erosion of a riverbed, leaves changing color in the fall, fireworks exploding, and
gallium melting in your hand.
For additional practice:
Relevant section in book is Chapter 2
Additional practice problems can be found on p. 41 (1-3) and p. 44 (3-5, 7-10, 12-15, 20,
and 22-26)