Chapter 2 Atoms Ions and Compounds

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

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Front (Question)

What does an atom consist of

Back (Answer)

A nucleus made of protons and neutrons

Front (Question)

What is the relative charge and relative mass of a proton

Back (Answer)

1+ 1

Front (Question)

What is the relative charge and relative mass of a neutron

Back (Answer)

0 1

Front (Question)

What is the relative charge and relative mass of an electron

Back (Answer)

1- 1/1836

Front (Question)

What are elements

Back (Answer)

A substance made up of only one type of atom

Front (Question)

What identifies the element

Back (Answer)

The number of protons in an atom

Front (Question)

What is the atomic number (Z)

Back (Answer)

The number of protons in the nucleus of an atom

Front (Question)

What is an isotope

Back (Answer)

Atoms of the same element with different numbers of neutrons

Front (Question)

Do isotopes of the same element react in the same way

Back (Answer)

Yes

#10

Front (Question)

What is the relative isotopic mass

Back (Answer)

The mass of an isotope compared with 1/12th of the mass of an atom of carbon-12

#11

Front (Question)

What is the relative atomic mass

Back (Answer)

The weighted mean mass of an atom compared with 1/12th of the mass of an atom of carbon-12

#12

Front (Question)

How can the percentage abundances of isotopes and their relative isotopic masses be found experimentally

Back (Answer)

Using a mass spectrometer

#13

Front (Question)

How does a Time-of-flight mass spectrometer work

Back (Answer)

• Sample is vaporised and then ionised to form positive ions: X(g) + e- → X+(g) + e- + e- • Ions are accelerated to the same kinetic energy • Ions are separated according to their mass. Heavier ions move more slowly and take longer to reach the detector than lighter ions

#14

Front (Question)

How do you work out Ar

Back (Answer)

Σ (percentage abundance x relative isotopic mass) / Σ percentage abundance

#15

Front (Question)

Based on the line in the periodic table, which atoms lose electrons and which atoms gain electrons

Back (Answer)

• Atoms on the left lose electrons to form positive ions (cations) • Atoms on the right gain electrons to form negative ions (anions)

#16

Front (Question)

What ion does zinc form

Back (Answer)

Zn²⁺

#17

Front (Question)

What ion does Silver form

Back (Answer)

Ag⁺

#18

Front (Question)

what ion does Scandium form

Back (Answer)

Sc³⁺

#19

Front (Question)

What is the formula for an ammonium

Back (Answer)

NH₄⁺

#20

Front (Question)

What is the formula for a hydroxide ion

Back (Answer)

OH⁻

#21

Front (Question)

What is the formula for a nitrate ion

Back (Answer)

NO₃⁻

#22

Front (Question)

What is the formula for a carbonate ion

Back (Answer)

CO₃²⁺

#23

Front (Question)

What is the formula for a sulphate ion

Back (Answer)

SO₄²⁻

#24

Front (Question)

What is the formula for ammonia

Back (Answer)

NH₃