Answer:
B. Density
Explanation:
The remaining three affect surface currents.
<u>Continental deflections</u>: The continents that rise above sea level cause the surface currents to change direction.
<u>Coriolis effect</u>: This is the deflection of wind and ocean currents due to the Earth’s rotation.
<u>Winds</u>: These are the wind patterns that circulate the warm and cold air around the globe.
Evaporation is the rate at which liquid changes into gas. The higher the temperature the higher the increased rate of evaporation.
So if the liquid cools which means the temperature reduces, the rate of evaporation would decrease.
So evaporation rate decreases. B.
The correct option is D.
The solubility of silver chloride in water is higher than that of silver bromide and the solubility of silver bromide in water is higher than that of silver iodide. This illustrates the differences in the reactivites of elements in the same group.
Answer:
This experiment is uncontrolled because two different masses of substance A are used.
Explanation:
A controlled experiment is a structured experiment aimed at testing a particular observation or observations. The setup of a controlled experiment helps to determine the reason why a particular observation occurs and what must have led to it.
In the experiment highlighted above, different masses of a substance were used, they were heated to different temperatures. The set up does not show any correlation between the masses of substances heated and the temperatures. It is even difficult to try to predict the hypothesis for this kind of experimental set up. All the variables in play can best be assumed to be independent of one another.
Group 8 elements are also known as the noble gasses. These elements already have a full valence shell with 8 valence electrons. This leaves the elements non-reactive as they are already stable and in a low energy state.