TaylorAsh
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1: Which of these is a chemical property of a substance

reactivity
color
boiling point
melting point




2: what does the release or absorption of energy indicate

physical change
chemical change
physical and chemical changes
neither physical nor chemical changes




3: which of these is an example of a physical change

breaking bread
baking bread
digesting bread
toasting bread




4: which of these is an example of a chemical change

cutting bread
spreading peanut butter
digesting a sandwich
stirring jelly




5: which of these is an example of a chemical change

fireworks exploding
grinding powder
melting cheese
ironing a shirt





Respuesta :

shadow445599
1:Reactivity
2:Physical and Chemical Changes
3:Breaking Bread
4:Digesting a Sandwich
5:Fireworks Exploding
Good Luck:)
Bistai

1. Reactivity

2. Chemical change

3. Breaking Bread

4. Digesting a Sandwich

5. Fireworks Exploding

Reactivity is the chemical property of a substance which describes its personal chemical reactions and also its interaction with other substances. Substances react when they are placed under conditions such as temperature, pressure, presence of catalysts and in combination with various substances.

A chemical change is a process in which one or more substances are changed into one or more new and different substances. In a chemical change there is a new arrangement of atoms, the energy of the system is altered and the change cannot be reversed. A chemical change that absorbs heat is an endothermic reaction while the one that releases heat is an exothermic reaction.



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