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What is are four things that indicate that a chemical change probably happened?
Four things that indicate a chemical change probably happened include color change, formation of a precipitate, evolution of gas, and change in temperature. These signs suggest that a new substance with different chemical properties has been formed.
How can one determine the change in temperature?
To determine the change in temperature, you can subtract the initial temperature from the final temperature. This will give you the difference in temperature, showing how much the temperature has changed.
Is the enthalpy change (H) independent of temperature?
No, the enthalpy change (H) is not independent of temperature. It can vary with temperature changes.
What are 3 things that show evidence of a chemical reaction?
- change of color - change of odor - release of a gas - change of the temperature - change of the viscosity - formation of a precipitate - change of general appearance - possible explosion - possible chemiluminiscence - formation of new compounds
Is temperature a chemical change?
No, temperature is not a chemical change. Temperature is a measure of the average kinetic energy of particles in a substance and does not involve the rearrangement of atoms or formation of new substances.
Does water temperature change when you add things to it?
NO!
Does carbon hydrogen change the temperature of THINGS?
All forms of mass have a temperature, and heat can flow from any hotter object to any cooler object, so in some circumstances carbon and/or hydrogen can change the temperature of things, or even of THINGS.
What are 3 things that would have to be changed to be aphysical change?
temperature, force
When you descend through the earth what two things change?
Temperature and Pressure.
What three things can cause a mammals body temperature to change?
The temperature of the environment, being sick and physical activity
What things may change the rate of chemical reactions in a cell?
temperature and pH
What are two things that can change the amount of current that flows?
voltage and resistance There is also temperature.
What 2 things work together to create density currents?
Change of temperature and salinity .
What are 3 things to look for to determine if a chemical change was produced in the experiment?
change in temperature, formation of a gas, formation of a solid
What things can be done to change how fast a chemical reaction occurs?
You can add a catalyst, or raise the temperature, or change the pressure, these are some of the things done to speed up a chemical reaction.
What four things affect pressure?
Change in volume - container getting bigger or smaller with same amount of air; Change in temperature - air gets hotter or colder causing it to expand or contract; Change in density - air is pumped into or out of a fixed container.
How can things change?
it can change them between states of Matter: Gas,Liquid,Solid and it can make the materials particles move faster (higher temperature).
