Answer: THE answer is A
Explanation: took the exam
Answer:
true
Explanation:
Which physical property can be measured? color density odor shape
The physical property that can be measured is the density. Color, odor and shape are properties that cannot be measured. They can be only observed through the naked eye and is subject to qualitative measurement.
Answer:
b) I took the test
Explanation:
What occurs during this change?
(1) Energy is absorbed and a bond is formed.
(2) Energy is absorbed and a bond is broken.
(3) Energy is released and a bond is formed.
(4) Energy is released and a bond is broken.
Answer is: (2) Energy is absorbed and a bond is broken.
This energy is called bond-dissociation energy.
Bond-dissociation energy is the measure of bond strength in a chemical bond.
Bond energy of bromine molecule (sigma bond) is energy needed for breaking up one molecule of bromine into two bromine atoms.
When two bromine atoms (Br) form molecule of bromine (Br₂), than energy is released and bond is formed.
The mass of the products equals the mass of the reactants because energy is not absorbed or given off by the reaction.
The mass of the products is less than the mass of the reactants because energy is given off by the reaction.
The mass of the products equals the mass of the reactants because the same atoms are present throughout the reaction