1Is chemistry the study of the submicroscopic, the microscopic, or the macroscopic?123429%68%0%2%1. Submicroscopic, because it deals with atoms and molecules, which can’t be seen with a microscope.2. Microscopic, because it pertains to the formation of crystals.3. Macroscopic, because it deals with powders, liquids, and gases that fill beakers and flasks.4. All of these answers, because most everything is made of atoms and molecules.A TV screen looked at from a distance appears as a smooth continuous flow of images. Up close, however, we see this is an illusion. What really exists are a series of tiny dots (pixels). This is similar to a chemist’s view of matter in that12345%3%3%90%1. the fundamental particles of matter can also be seen when looked at closely with a magnifying glass.2. on the submicroscopic level, chemists find that matter is made of extremely small particles, such as atoms and molecules.3. anything that a chemist can see, touch, hear, smell, or taste is an illusion.4. elements are made up of only three basic types of matter.1. The sample is being cooled, and the material is condensing2. The sample is being cooled, and the material is freezing.3. The sample is being heated, and the material is boiling4. The sample is being heated, and the material is melting.5. The sample is unchangedWhat is happening?1234510%88%0%0%3%Physical or chemical change?1234553%25%8%13%3%1. Chemical, because the atoms are connected differently.2. Chemical, because of the formation of elements3. None of these choices4. Physical, because of a change in phase5. Physical, because a new material has been formedWhat type of phase change does the following figure best describe?123450%15%21%64%0%1. Condensation2. Evaporation3. Freezing4. Melting5. SublimationThe phase in which atoms and molecules no longer move is the123453% 3%45%45%5%1. gas phase2. liquid phase3. plasma phase4. solid phase5. none of these choicesWhat is the gas found within a bubble of boiling water?123455%0%68%18%10%1. Air2. Chlorine from the water3. Hydrogen4. Oxygen5. Water vaporThis change is chemical or physical:water begins to boil1273%28%1. Chemical2. PhysicalThis change is chemical or physical:grass growing1266%34%1. Chemical2. Physical2This change is chemical or physical:rock is crushed to gravel1295%5%1. Chemical2. PhysicalWhat chemical change occurs when a wax candle burns?123450%18%8%69%5%1. The wax within the wick is heated to about 600°C.2. The wax near the flame melts.3. The molten wax is pulled upwards through the wick.4. The heated wax molecules combine with oxygen molecules.5. You can see light from the flame.The image shown represents which kind of matter contained in the box?1234515%33%3%23%28%1. An element2. A mixture3. A compound4. All of these choices5. None of these choices1. Box A2. Box B3. Box C4. Both A and C contain elements5. Both B and C contain elements6. Both A and B contain elementsABCWhich of the following boxes contains an element? (There may be other stuff too)1234560%10%0%13%21%56%1. Box A2. Box B3. Box C4. Both A and C contain compounds5. Both B and C contain compounds6. Both A and B contain compoundsABCWhich of the following boxes contains a compound? (There may be other stuff too)1234563%0%98%0%0%0%ABCWhich of the following boxes contains a mixture? (There may be other stuff too)12345698%3%0%0%0%0%1. Box A2. Box B3. Box C4. Both A and C contain mixtures5. Both B and C contain mixtures6. Both A and B contain mixturesWhat is the difference between a compound and a mixture?1234561%3%13%24%0%1. One consists of atoms from different elements; the other does not2. One has the particles evenly distributed, the other needs to be stirred3. One is a solid, and the other is a liquid4. The components of a mixture are not chemically bonded together5. The way in which their atoms are bonded togetherWhy can’t the elements of a compound be separated from one another by physical means?123458%3%11%14%64%1. Elements found within a compound tend to be inert.2. Elements tend not to be soluble in water.3. Their atoms are too tightly bound to one another.4. They are too homogenous when found within a compound.5. They are too small to be divided.Oxygen atoms are part of water molecules. Does this mean that oxygen, O2, and water, H2O, have similar properties?123455%51%30%3%11%1. No, but their similar properties are only a coincidence.2. No, the properties of water are uniquely different from the properties of the elements from which it is composed.3. Of course, that’s why we can breathe water or air.4. Yes, and this explains how fish are able to breathe water.5. Yes, whenever an atom is part of a compound, the properties of each will be
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