Physical Vs Chemical Changes Notes Flashcards Preview

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Flashcards in Physical Vs Chemical Changes Notes Deck (5)
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1

Chemical property

A substances ability to react with anther substance to crate a new product

2

Chemical change

A change in the nature of the starting materials undergoing a chemical reaction to produce one or more new substances or products.
Usually the products is difficult to reverse

3

Reactant

Starting material in chemical reaction

4

Product

Stuff that is made in a chemical reaction

Must draw an arrow, no equal signs allowed

5

Signs of chemical change

• Temperature change: release energy-heat, light fire
Absorb heat energy- turns cold
• colour change
• odour produced?
• solid produced- precipitate
• *new substance produced- if this does not happen, a change hasn't occurred*
• gas/bubbles