<span>The alkali metals and hydrogen are reactive because they have only one electron to give in order to complete their valence shell. It is easier to give that one electron so when given the opportunity they will. This means they will react with anything polar or willing to take an electron.</span>
Answer:
Convection
Explanation:
Hot water will rise due to heat transfer by convection occurring in the heating system.
- When a fluid is heated, the molecules will gain thermal energy.
- As the thermal energy of the liquid increases, the molecules will have heat which is average kinetic energy in the system.
- This causes them to be less denser and they rise in the cooking medium.
- As they rise, the colder part of the water sinks down to replace them in the pot.
- This exchange sets up convection cells in the heating medium.
White blood cells (WBCs), also called leukocytes, are the front lines of defense when it comes to our bodies fighting off germs or infection. When we are sick, the immune system snaps into response mode by sending white blood cells to fight off the foreign infection—by either producing protective antibodies or by devouring the bacteria.
Flame emission is a method of chemical that uses intensity of light from a flame.