0
B is the chemical symbol of boron.
Wiki User
∙ 6y ago
Add your answer:
Earn +20 pts
Write 3 differences between chemical and physical change?
Okay now here goes in a physical change no chemical reaction takes place. in chemical change chemical reactions take place. A physical change is reversible but a chemical change is not.In a physical change no new substance is formed(A+B=B) in a chemical change new substances are formed(A+B=C)
Does a change of state always occur in a chemical change?
not always, like the change is in the display without change in composition then it is change of state, other then will be chemical change
What observations does not indicate that a chemical change has occurred a. change of state b. formation of a precipitate c. absorption of energy d. release of a gas?
acually the answer depends on the nature of chemical reaction under consideration and depending on the reaction, there are two possible answers: a change of state and absorption of energy.
Is melting a type of Chemical change?
no- melting is not a chemical change. It is merely a change in state of the same substance not a chemical reaction.
Why are changes of state chemical changes?
They aren't; a change of state is a physical change
Heat breaks and creates bonds between particles in a a physical change b chemical chage c change of state or d change of temperature?
b) chemical changeyou guys r not smart :)
What happens to make a chemical reaction?
In A Chemical Reaction the following take place a) there is evolution of a gas b) change in colour c) change in state d) change in temperature
What is the difference between a chemical change and a change of state?
A change of state is a physical change while a chemical change is not
Write 3 differences between chemical and physical change?
Okay now here goes in a physical change no chemical reaction takes place. in chemical change chemical reactions take place. A physical change is reversible but a chemical change is not.In a physical change no new substance is formed(A+B=B) in a chemical change new substances are formed(A+B=C)
Is a Decay of fallen leaves a physical or chemical change?
chemical because the chloroplast have had the chlorophyll die off
Is mold a chemical change?
No. A material is heated, i.e. changes state, then hardens again. No chemical change, but at least a partial state change.
Is change of state a chemical change?
No, change of state is a physical change.
Does a solution have a chemical change?
A solution does not have a chemical change, but it does have a physical change in state.
What makes a reaction to happen?
In A Chemical Reaction the following take place a) there is evolution of a gas b) change in colour c) change in state d) change in temperature
What is needed for a solid to sublime and what changes of state occur?
pressure and the change of state is chemical
Does a change of state always occur in a chemical change?
not always, like the change is in the display without change in composition then it is change of state, other then will be chemical change
Is decaying a chemical or physical changes?
Better to state it a biochemical change if required can state it chemical change
