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xeze [42]
2 years ago
10

PLEASE HELP ME WITH THIS I ONLY HAVE 8 MINUTES I will give you extra points . NUMBER 6

Chemistry
2 answers:
Veronika [31]2 years ago
6 0

Answer:

3 mass instincts. If you look at the scale you can they evenly sometimes line up with a line. Whenever a huge instinct occurred the lines were really high, but whenever they were little instincts on the scale the lines would go down

Explanation:

scoray [572]2 years ago
4 0
A mass extinction is the rapid decrease in something. so anytime that graph goes down drastically would be a mass extinction
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A piece of wood burns to form ash. ____C_____ Water evaporates into steam. ____P_____ A piece of cork is cut in half. ____P_____
IceJOKER [234]

Answer:

A piece of wood burns to form ash - Chemical change

Water evaporates into steam - Physical change

A piece of cork is cut in half. __ Physical change

A bicycle chain rusts. _____Chemical change

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Water is absorbed by a paper towel. _____Physical change

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A Plant turns sunlight, CO2, and water into sugar and oxygen. _Chemical change

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Milk sours. Chemical change

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Explanation:

Matter undergoes two types of changes: physical changes and chemical changes.

A physical change is one that affects only the physical properties of a substance such as colour, size, shape, etc., and in which no new substances are formed. Physical changes are easily reversible.

Chemical changes are changes which affect the chemical characteristics and properties of a substance such as reactivity, acidity, basicity, etc., resulting in the formation of new substances.

The following changes below are categorized as either physical or chemical changes based on which of the properties of the substance is affected and whether new substances result or not.

A piece of wood burns to form ash - Chemical change

Water evaporates into steam - Physical change

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Water is absorbed by a paper towel. _____Physical change

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