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Tanzania [10]
2 years ago
12

Help me please

Chemistry
1 answer:
Serhud [2]2 years ago
8 0

1.what is an atomic model ?

= <em>A </em><em>smallest</em><em> </em><em>particle </em><em>of</em><em> </em><em>an </em><em>element</em><em> </em><em>that</em><em> </em><em>can</em><em> </em><em>take</em><em> </em><em>part</em><em> </em><em>in</em><em> </em><em>chemical</em><em> </em><em>reaction</em><em> </em><em>without</em><em> </em><em>division</em><em> </em><em> </em><em>is</em><em> </em><em><u>known</u></em><em><u> </u></em><em><u>as</u></em><em><u> </u></em><em><u>atomic</u></em><em><u> </u></em><em><u>model</u></em><em><u> </u></em><em><u>.</u></em>

<em>2</em><em>.</em><em> </em>What is called atomic number and mass number?

=<em>The</em><em> </em><em>total</em><em> </em><em>number</em><em> </em><em>of </em><em>protons</em><em> </em><em>present</em><em> </em><em>in</em><em> </em><em>the</em><em> </em><em><u>nucleus</u></em><em><u> </u></em><em><u>of </u></em><em><u>an</u></em><em><u> </u></em><em><u>atom</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>known</u></em><em><u> </u></em><em><u>as</u></em><em><u> </u></em><em><u>atomic</u></em><em><u> </u></em><em><u>number</u></em><em><u> </u></em><em><u>.</u></em>

<em><u>=</u></em><em><u>The</u></em><em><u> </u></em><em><u>mass</u></em><em><u> </u></em><em><u>number</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>an</u></em><em><u> </u></em><em><u>atomic</u></em><em><u> </u></em><em><u>number</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>amu</u></em><em><u>.</u></em>

3. What is called an element?

=<em><u>An </u></em><em><u>element </u></em><em><u>is </u></em><em><u>the</u></em><em><u> </u></em><em><u>simplest</u></em><em><u> </u></em><em><u>pure</u></em><em><u> </u></em><em><u>form</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>a </u></em><em><u>substance</u></em><em><u> </u></em><em><u>which</u></em><em><u> </u></em><em><u>cannot</u></em><em><u> </u></em><em><u>be</u></em><em><u> </u></em><em><u>split</u></em><em><u> </u></em><em><u>up</u></em><em><u> </u></em><em><u>into</u></em><em><u> </u></em><em><u>other</u></em><em><u> </u></em><em><u>simpler</u></em><em><u> </u></em><em><u>substance</u></em><em><u> </u></em><em><u>by</u></em><em><u> </u></em><em><u>any</u></em><em><u> </u></em><em><u>chemical</u></em><em><u> </u></em><em><u>method.</u></em>

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