Presentation on theme: "1.1-1.2 Study Question Answers Chemistry. 1.1 1.Photosynthesis Equation was CO 2 + H 2 O C 6 H 12 O 6 + O 2."— Presentation transcript:
Study Question Answers Chemistry
1.1 1.Photosynthesis Equation was CO 2 + H 2 O C 6 H 12 O 6 + O 2
2. Sucrose (or table sugar), carbon dioxide, and water
3. Artificial sweeteners or synthetic fibers
4. Basic research is carried out for the sake of increasing knowledge whereas applied research is carried out to solve a problem.
Has mass and takes up space
2. An atom
3. Elements, element
4. carbon, oxygen, hydrogen
6. Water (H 2 O) and carbon dioxide (CO 2 )
7. Extensive properties depend on the amount of matter present whereas intensive properties are the same regardless of how much of the substance is present.
8. volume, mass, and amount of energy in a substance
9. Melting point, boiling point, density, and ability to conduct electricity Also: ability to conduct heat
10. A physical property is a characteristic that can be observed or measured without changing the identity of the substance whereas a chemical property is observed when the substance undergoes changes that transform it into a different substance.
11. Melting point and boiling point
12. Ability to burn (combustibility, flammability), ability to rust, and ability to tarnish
13. A physical change does not involve a change in the identity of the substance whereas in a chemical change one or more substances are converted into different substances.
14. grinding, cutting, melting, and boiling
15. Changes of state such as melting and boiling
Rusting – CMelting – P Milk souring – CCooking – C Flammable - CTarnishing – C Freezing – PEvaporating – P Corroding– CDensity– P Viscosity– PFreezing point– P Boiling point– PConducts electricity– P Melting point– PBuoyancy– P Reactivity – CConducts heat – P Tooth decaying– CBurning – C Condensing – PDissolving – P
4 states of matter 16. Solid has a definite shape and a definite volume Liquid has a definite volume but an indefinite shape Gas has neither a definite shape nor a definite volume Plasma a high temperature physical state of matter in which atoms lose most of their electrons
17. Solids particles are held together by strong attractive forces and vibrate about fixed points Liquids particles in a liquid move more rapidly than in a solid, overcoming the strong attractive forces between them and allowing the liquid to flow Gases particles move very rapidly and are at great distances from one another; the attractive forces between gas particles have less of an effect than in liquids and solids