Agroup of students wants to see how temperature affects the time it takes for spilled water to dry up. in the investigation wat will be the dependent and independent variable

The correct answer will be-

1. Independent variable-Time

2. dependent variable- spilled water.

Explanation:

The experiment was performed with the aim to study the effect of temperature on spilt water to dry up.

The variables are the factors on which the experiment is based which can be distinguished into two types: the independent variables and dependent variables.

The independent variables are the variables which can be controlled and changed or can change itself in the experiment while the dependent variable is the variables which depend on independent variables and is studied in the experiment.

Since the time in the experiment can be controlled will be considered an independent variable while the volume of drying of spilt water is studied will be considered the dependent variable.

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is and electronic configuration of phosphorous is .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.  

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.