substance that changes the rate of chemical reactions without changing its own structure
change of energy from one form to another
energy of objects in motion
material that doesn't allow heat to be conducted easily
law of conservation of energy
energy cannot be created or destroyed
transfer of energy from particle to particle when there is a temperature difference
ability to cause change
thermal energy that moves from a warmer to a cooler object
energy that travels in waves in all directions from its source
measure of the average kinetic energy of particles.
reaction that absorbs energy
energy stored within chemical bonds
transfer of energy when particles move from place to place where there is a temperature difference
reaction that gives off energy
_______ are materials that can transfer thermal energy easily
Columns of warm air that are forced up as cold air sinks are _________.
____________ are the forces that hold particles in a substance together.
Substances that change the rate of a chemical reaction without themselves being changed are ___________.
In your body, ____________ speed up cell processes.
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