Isotopes and Ions Year 9

An Isotope is an element with different

• Number of electrons

• Number of neutrons

• Number of protons

• Chemical reactions

The Scientific notation for a the three Carbon isotopes are

• ¹²₆C ¹³₆C 14C6

• ¹²₆X ¹³₆X ¹⁴₆ X

• ¹²₆C ¹³₆C ¹⁴₆ C

• ₆ C ₆ C ₆ C

A cation is a atom that has

When Na loses 1 electron it becomes a cation.

It has more protons than .

Calculate the number of neutrons in this isotope of Hydrogen ³₁H

• 1 nuetron

• 2 neutrons

• 3 neutrons

• 4 neutrons

An Anion is a charged particle because it has

• More electrons than protons

• Less electrons than protons

• More neutrons than protons

• Same number of protons and electrons

What is a use of Carbon 14

• It can be used to treat cancer

• It can be used to determine how old fossils are

• It can be used to detect gas leaks

• It can be used as a fuel in a nuclear reactor

Which are examples of cations ?

• Ca ²⁺ Na⁺ H⁺

• N^3- O ^2- F ^-

• O C S

• All of the above

Exmaples of Isotopes are

• ¹₁ H ²₁ H ³₁ H

• ³⁵₁₇ Cl ³⁷₁₇Cl

• ¹²₆ C ¹³₆C ¹⁴₆ C

• All of the above

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