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Fiesta28 [93]
3 years ago
14

Name four types of pathogens that could cause infectious disease??

Chemistry
1 answer:
Kryger [21]3 years ago
3 0
Bacteria, virus, fungi, and protists are the four pathogens.
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Explain examples of a physical and chemical change of matter
monitta

HEY DEAR..

<u>PHYSICAL</u><u> </u><u>CHANGE</u>

<em>Those</em><em> </em><em>Changes</em><em> </em><em>in</em><em> </em><em>which</em><em> </em><em>no</em><em> </em><em>new</em><em> </em><em>substances</em><em> </em><em>are</em><em> </em><em>formed</em><em> </em><em>are</em><em> </em><em>called</em><em> </em><em>physical</em><em> </em><em>changes</em><em>.</em><em> </em><em>it</em><em> </em><em>is</em><em> </em><em>a</em><em> </em><em>temporary</em><em> </em><em>changes</em><em> </em><em>which</em><em> </em><em> </em><em>can</em><em> </em><em>be</em><em> </em><em>reversed</em><em> </em><em>easily</em><em> </em><em>to</em><em> </em><em>form</em><em> </em><em>the</em><em> </em><em>original</em><em> </em><em>substance</em><em>.</em>

<u>Example</u><u>:</u><u>-</u> <em>Melting</em><em> </em><em>of</em><em> </em><em>ice</em><em> </em><em>,</em><em> </em><em>Making</em><em> </em><em>a</em><em> </em><em>solution</em><em>, </em><em> </em><em>Glowing</em><em> </em><em>of</em><em> </em><em>an</em><em> </em><em>electric</em><em> </em><em>bulb</em><em> </em><em>,</em><em> </em><em>freezing</em><em> </em><em>of</em><em> </em><em>water</em><em> </em><em>etc</em><em>.</em>

<u>CHEMICAL</u><u> </u><u>CHANGE</u>

<em>Those</em><em> </em><em>changes</em><em> </em><em>in</em><em> </em><em>which</em><em> </em><em>new</em><em> </em><em>substances</em><em> </em><em>are</em><em> </em><em>formed</em><em> </em><em>are</em><em> </em><em>called</em><em> </em><em>chemical</em><em> </em><em>changes</em><em>. </em><em>it</em><em> </em><em>means</em><em> </em><em>it</em><em> </em><em>is</em><em> </em><em>permanent</em><em> </em><em>changes</em><em> </em><em>which</em><em> </em><em>are</em><em> </em><em>usually</em><em> </em><em>irreversible</em><em>. </em>

Example:- <em>Burning</em><em> </em><em>of</em><em> </em><em>charcoal</em><em>,</em><em> </em><em>fuels</em><em> </em><em>and</em><em> </em><em>cutting</em><em> </em><em>of</em><em> </em><em>trees</em><em>, </em><em> </em><em>even</em><em> </em><em>digestion</em><em> </em><em>of</em><em> </em><em>food</em><em> </em><em>is</em><em> </em><em>in</em><em> </em><em>chemical</em><em> </em><em>change</em><em>. </em>

HOPE ITS HELPFULLL

BE BRAINLY.

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