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What else can I help you with?
Do all substances change when heat is added?
yes but only if you heat it enough
What represents a substances resistance to heat change?
conductivty
What substances undergo physical change?
All substances have physical changes.
What is the specific heat of mixture and how does it affect the overall temperature change in a system?
The specific heat of a mixture is the amount of heat needed to raise the temperature of the mixture by 1 degree Celsius. It affects the overall temperature change in a system because substances with higher specific heat require more heat to raise their temperature, while substances with lower specific heat require less heat. This means that the specific heat of a mixture determines how much heat is needed to change its temperature, impacting the overall temperature change in the system.
Why same amount of heat supplied to same amount of different substances does not produce the same increase in temperature?
There is a formula in physics ΔQ=m*c*ΔT, where m is the mass of the substance you are heating, ΔQ is the heat you supply to the substance, c is the specific heat which has a different value for different substances and ΔT is the change in temperature. If your substances are different and they have the same mass then by supplying the same amount of heat the change in temperature will be different.
Do acids melt substances?
No, melting is a change of state caused by heat. Acids are corrosives.
When you reuse a crystal heat pack is that a chemical or physical change?
Reusing a crystal heat pack involves a physical change. When the heat pack is exposed to heat or boiled to reset the crystals, the change is reversible and does not involve a chemical reaction.
Is baking brownies change or a chemical change?
chemical! new substances are being formed, heat is created, and odors are produced.
Which substances will show the smallest change in temperature when equal amounts of energy are absorbed?
Substances with high specific heat capacities, such as water, will show the smallest change in temperature when equal amounts of energy are absorbed. This is because these substances can absorb a lot of heat energy without a significant increase in temperature.
Are all substances the same before and after burning?
No, some substances change their whole form and others just change their color and shape.
Do substances absorb or release heat energy as then change from a liquid to the solid phase?
When a substance changes from a liquid to a solid it releases energy. (You take the heat out)
What substances that heat and cool quickly have a high or low specific heat?
A substance that has a low specific heat needs less heat to increase its temperature. In other words under a constant heat flux it will heat or cool more quickly than the higher specific heat substances.
