5 Science Questions from the TASC TEST 1
- Slides: 11
5 Science Questions from the TASC TEST
1. Which element has 14 protons? A. Be B. Cr C. Si D. Rf
1. Which element has 14 protons? C. Si Each element’s ATOMIC NUMBER is the number of protons it has.
2. Which of the following CANNOT be predicted about an atom based upon it’s location on the Periodic Table? A. atomic radius B. ionization energy C. metallic character D. name
2. Which of the following CANNOT be predicted about an atom based upon it’s location on the Periodic Table? D. name There are trends on the table, metals on one side, nonmetals the other. The radius (size) is predictable, as is the ionization energy. Names are very random.
3. Which elements are the most stable? A. noble gases B. halogens C. transition metals D. alkali metals
3. Which elements are the most stable? A. noble gases Noble gases are called that because they do not bond to other atoms. All other elements bond (react) together. The noble gases are dull (too stable).
4. An experiment is conducted with the mouth of a balloon is attached to the opening of a test tube. The test tube is heated. As the temperature of the air in the tube increases, the air inside the tube expands, causing the balloon to expand as well. Which describes this phenomenon best? A. fusion B. combustion C. convection D. radiation
4. An experiment is conducted with the mouth of a balloon is attached to the opening of a test tube. The test tube is heated. As the temperature of the air in the tube increases, the air inside the tube expands, causing the balloon to expand as well. Which describes this phenomenon best? C. Convection is the transfer of energy through air (or water). The heated air molecules move faster, causing them to have more collisions, and stronger collisions, causing them to expand. The glass can’t move, but the rubber balloon can enlarge to accommodate this bigger gas.
5. Which of the following elements is NOT derived from sugar molecules to be used in the formation of amino acids? A. B. C. D. hydrogen helium carbon oxygen Earlier in the exam there was a question about photosynthesis, and so this equation was on the previous page (it’s helpful here). 6 CO 2 + 6 H 2 O + LIGHT → C 6 H 12 O 6 + 6 O 2
5. Which of the following elements is NOT derived from sugar molecules to be used in the formation of amino acids? B. helium – a noble gas 6 CO 2 + 6 H 2 O + LIGHT → C 6 H 12 O 6 + 6 O 2
