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How is the increase or decrease of temperature a chemical change?
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What is DELTA T?
delta T or ▲T is the change of temperature. ▲T= (Final Temperature-Initial Temperature)
How might a thermometer help you decide if there was any chemical change on mixing iron and charcoal?
For a chemical change to occur, there must be a chemical reaction. A chemical reaction would be either endothermic (uses energy, mostly heat), or exothermic (produces energy, again mostly heat). Any change in temperature of the reactants, as measured by a thermometer, will tell you not only ifa chemical reaction occurred, but also which kind of chemical reaction. No temperature change usually indicates that no reaction has occurred, a decrease in temperature would indicate an endothermic reaction, while an increase in temperature would indicate an exothermic reaction.
How does rate constant change with temperature?
The answer depends on the rate of WHAT! The rate of water boiling, for example, will increase with temperature but the rate of ice forming will decrease.
How change will decrease the number of effective collisions during a chemical reaction?
- a lower concentration of reactants- a lower temperature
In a chemical change what happens to molecules?
In physical change the moleculer distance is changed(increase/decrease) but the moleculer structure remains unalter.
Can we say mass vary with temperature for exp the mass of solid increase or decrease when temperature increase?
Mass of any chemical, in Chemistry, is always constant, no matter how much you change the conditions.
What temperature change do you think would be required to increase or decrease the reaction time by a factor of 2?
all chemical reaction has to be thought of to be there
What two types of energy change can occur in a chemical reation?
Two types of energy change that can occur in a chemical reaction are endothermic or exothermic. An exothermic reaction causes an increase in temperature and an endothermic reaction causes a decrease in temperature.
What it will change adding a catalyst to a chemical reaction?
It will increase or decrease the speed of the chemical reaction.
Would something turning hot to cold be a chemical change?
A decrease in temperature is a physical change, not chemical.
What 2 things can make the pressure of gas rise?
1) Increase in heat 2)Decrease in volume
What is DELTA T?
delta T or ▲T is the change of temperature. ▲T= (Final Temperature-Initial Temperature)
When temperature increases does density increase or decrease?
An increase in temperature usually causes an increase in volume. Since the mass doesn't change, density decreases. tt
Will there be an increase in temperature in a chemical reation?
OF COURSE!!!!! I'm 12 and I know that heat is a factor in a chemical change.
How an increase in temperature change the rate constant of a chemical reaction?
yes ofcourse!
Does solubility decrease as temperature increase and why does helium show minimal change?
Solubility increases with increase in temperature and helium is an un-reactive gas as it is one of the noble gases.
How might a thermometer help you decide if there was any chemical change on mixing iron and charcoal?
For a chemical change to occur, there must be a chemical reaction. A chemical reaction would be either endothermic (uses energy, mostly heat), or exothermic (produces energy, again mostly heat). Any change in temperature of the reactants, as measured by a thermometer, will tell you not only ifa chemical reaction occurred, but also which kind of chemical reaction. No temperature change usually indicates that no reaction has occurred, a decrease in temperature would indicate an endothermic reaction, while an increase in temperature would indicate an exothermic reaction.
