What is the first element to have p electrons?

A. helium

B. lithium

C. boron

D. aluminum

In the energy diagram, which number represents the potential energy of the products? (1) (2) (3) (4)

4 - explicar as mudanças de estados fisicos da materia 6 - definir e exemplificar: -Ligações iônicas ou eletrovalente -Ligações covalentes ou molecular 7-definir substancias puras e suas clasificações 8-definir e exemplificar misturas homogeneas e

Suppose you are digging a hole in the ground. You notice that the soil is in two layers. Each layer has particles of different sizes.

Match each word to it's correct meaning. 1. chain reaction 2. critical mass 3. fission 4. fusion A spontaneous or induced reaction that continues to feed itself and keep itself going.

In general, what is the effect of tempature on the solubility of a gas

If there is a loss of 5.63 x 10 - 7 kg of mass in a nuclear reaction, how many joules of energy would be released? Recall that C equals 3 times 108 m / s.

Why is it important that scientific knowledge changes?

How many formula units are there in 2.3g of NH4SO2

In a cooking context, which of the following materials is the best heat conductor? A. Any dense liquid B. Iron C. Gas D. Glass

When you open a bottle of soda, bubbles of carbon dioxide start appearing. Is this a chemical or physical change and why?