S3w4 Tuesday Bellringer - Gwyneth Lenfest | Biblioteka

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Chemical Changes involve:

A . the original substance existing at the end

B . A new substance forming at the end

C . Energy changes

D . no change in energy

E . a physical change

F. Ability for original substance to be separated if it is a mixture

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Physical changes involve:

A . existence of the original substance at the end

B . a new substance forming

C . Always a change in energy

D . Sometimes a change in energy

E. Chemical Change

F. Ability for original substance to be separated if it is a mixture

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Is dissolving a physical or chemical change?

A . Physical

B . Chemical

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are reactions a chemical or physical change?

A. Physical

B . Chemical

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Is slicing something in half a physical or chemical change?

A . Physical

B. Chemical

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Water in liquid heated to form water in steam form - is that a physical or chemical change?

A . Physical

B . Chemical

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When a chemical breaks into two new chemicals is that a Physical or Chemical change?

A . Physical

B . Chemical

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4 Fe + 3 O2 ----> 2 Fe2O3

A . Physical

B . Chemical

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Solid water turning into liquid water

A . Physical

B . Chemical

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HCl + CaCO3 -----> HCO3 +CaCl (acid/liq.) + (base) (gas) (salt/solid)

A . Physical

B . Chemical

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Milk souring is

Physical change

chemical change

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is digestion by a fungus a chemical or physical change?

A . Physical

B. Chemical