Because you are never adding more than the substances created, nor are you creating any, but should a chemical reaction take place you could see the liquid change form into a gaseous state and that would result a loss of the liquid volume.
So to wrap it all up you can’t have more liquids than what is already there but you could always lose some due to a chemical change, hence the reason it says an open flask, the chemical change would not be collected, mass would be lost
<span>The answer to this question would be: B.They are different.
A compound will have different characteristics from their element. </span>The interaction of different elements in a compound makes it so. They might have similar or opposite characteristic but it didn't always happen so those answers are not best.
Answer:
Two
Explanation:
In a double-replacement reaction, there will be two reactants and two products.
It is called double replacement reaction because one element in reactant 1 replaces an element in reactant 2 and other element in reactant 2 replaces other element in reactant 1.
Here two replacements are taking place. Hence, this is called double replacement reaction.
A Neutralization reaction i.e an Acid - Base reaction is a good example of Double replacement reaction.
An Example is provided below for better understanding :
HNO3 + NaOH --> NaNO₃ + H₂O.
Here HNO₃ is the acid and NaOH is the base which are the reactants.
NaNO₃ and H₂O are the products.
This is a double replacement reaction because,
Hydrogen(H) in HNO₃ replaces Sodium(Na) in NaOH, and
NO₃ in HNO₃ replaces OH in NaOH.
Here, there are 2 reactants and 2 products.
The elements of group 1 makes ionic bond with the elements of group 7 due to high difference of electronegativity values.
<h3>Type of bond between group 1 and 7</h3>
The elements of first group lose its one outermost electrons while on the other hand, the elements of seven group needs one electron so they gain that one electron so they make an ionic bond with each other.
So we can conclude that the elements of group 1 makes ionic bond with the elements of group 7 because of the high difference of electronegativity values.
Learn more about electronegativity here: brainly.com/question/2415812
