Bán lẻ các loại gối chữ u cao su non giá rẻ tại Hà Nội tphcm

by on November 24, 2015

Gối văn phòng đang dần trở thành vật dụng không thể thiếu đối với những ai làm việc tại văn phòng, thường xuyên đi xe ô tô, đi máy bay trong những chuyến du lịch, công tác. Với chiếc gối chữ u này bạn hoàn toàn không còn lo lắng bởi những cơn nhức mỏi ở cổ […]

Element Groups 1 – 13 Notes (Chemistry)

by on November 16, 2015

Group 1: The Alkali Metals   Characteristics Do not occur in nature as elements Reactive metals that are obtained by reducing 1+ ions in natural compounds Stored under kerosene because they are highly reactive One valence electron Form ionic compounds Strong reducing agents and low ionization energies Good conductors of electricity and heat Ductile, malleable, […]

Chemistry Chapter 12 Vocabulary

by on November 10, 2015

Liquid: has definite volume, no definite shape. It flows, therefore taking the shape of the container. Fluid: substance that can flow and therefore take the shape of its container. Capillary Action: attraction of the surface of a liquid to the surface of a solid. Surface Tension: force that tends to pull adjacent parts of a […]

Rounding Rules for Significant Figures

by on November 7, 2015

If the digit following the last digit to be retained is: Then the last digit should: Example (rounded to three significant figures) Greater than 5 Increased by 1 42.68 g -> 42.7 g Less than 5 Stay the same 17.32 m -> 17.3 m 5, followed by nonzero digit(s) Be increased by 1 2.7851 cm […]

Chemistry – Measurements

by on November 5, 2015

Measurement : A measurement must always contain a quantity (number) and a unit. Example:   1 Centimeter Quantity    Unit Scientific Notation: Chemists often work with numbers that are extremely large or extremely small. For example, there are 10,300,000,000,000,000,000,000 carbon atoms in a 1-carat diamond each of which has a mass of 0.000,000,000,000,000,000,000,020 grams. It is impossible to […]

pre world war 2

by on November 3, 2015

  London economic conference (1933) The conference Represenatatives from 66 countries met in London on June 12, 1933 The goal was to stabilize international currencies, to get rid of global depression, and to revive international trade Experts believed that in order for the conference to work it would have to restore gold standard, stabilize prices […]

Physics Honors Chapter 2 – Linear Motion Part 1

by on November 2, 2015

*Note: I will not post up chapter 1 study guides because I think it is basics that almost everyone knows. Scientists form hypothesis to prove a theory and blah blah blah…   Chapter 2 – Linear Motion   2.1 – Motion Is Relative   Terms: -relative: with respect to   Concept: –Motion is described in […]