Topic 2 - Atomic Structure Flashcards Preview

Grace Chemistry IGCSE > Topic 2 - Atomic Structure > Flashcards

Flashcards in Topic 2 - Atomic Structure Deck (10)
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1
Q

Describe protons

A

Relative mass: 1
Charge: +1
Location: the nucleus

2
Q

Describe neutrons

A

relative mass: 1
Charge: 0
Location: the nucleus

3
Q

Describe electrons

A

relative mass: 1/2000
Charge: -1
Location: the shells

4
Q

What is the mass number?

A

Protons + neutrons

5
Q

What is the atomic number and what does it determine?

A

Number of protons

Determines the element

6
Q

Define isotope

A

Atoms which have the same number of protons, but a different number of neutrons

7
Q

Describe the relationship between isotopes and their chemical reactions

A

They are the same

8
Q

What is a period in the periodic table?

A

A row

Shows the number of shells

9
Q

What is a group in the periodic table?

A

A column

Shows the number of electrons in the outer-shell

10
Q

How do you calculate RAM?

A

Add the products of the relative mass of each isotope and it’s percentage. Divide this by 100.