Chemical Reactions

chemicals are used

molecules do not physically touch

a new substance is formed and in a physical no new substance is formed

the change can be seen but in a physical change it cannot

sugar dissolving in water

water turning into steam

burning wood

mixing baking soda and vinegar

tearing paper

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Matter cannot be created.

Matter cannot be destroyed.

Matter can only be rearranged/conserved.

Matter doesn't matter.

slower

faster

at the same rate

in a smaller volume

to warm up the reaction

to speed up the reaction

to create more reactants

to stop the reaction

When two substances react, the temperature of the mixture decreases.

When two substances react, the temperature of the mixture increases.

There is less energy going into the reactant to break the bond than there is energy leaving the product.

There is more energy going into the reactant to break the bond than there is energy leaving the product.

The amount of energy entering and leaving is the same.

When two substances react, the temperature of the mixture decreases.

When two substances react, the temperature of the mixture increases.

There is less energy going into the reactant to break the bond than there is energy leaving the product.

There is more energy going into the reactant to break the bond than there is energy leaving the product.

The amount of energy entering and leaving is the same.