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Flashcards in C1 - Fundamental Ideas Deck (41)
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0

Name the place where all the existing elements can be found

Periodic Table

1

Name what all substances are made up of

Atoms

2

What does Na represent in the periodic table

Sodium

3

What do "groups" in the periodic table contain?

Elements with similar chemical properties.

4

Why does the periodic table have symbols?

So scientists worldwide can understand which element is which.

5

What is a molecule?

More than one atom chemically bonded.

6

What is a compound?

A molecule with more than one type of element chemically bonded.

7

What can be found at the centre of an atom?

The nucleus

8

What does an atomic nucleus generally contain?

Protons and Neutrons

9

What sub-atomic particle "orbits" the nucleus?

Electrons

10

Protons have what relative charge?

+1 (positive)

11

Neutrons have what relative charge?

0 (neutral)

12

Electrons have what relative charge?

-1 (negative)

13

What relative charge does an atom have? Why?

An atom has no charge because an atom has an equal quantity of protons and electrons so the charges cancel out.

14

What does the atomic number represent?

The number of protons in an atom's nucleus.

15

What does the mass number represent?

The number of protons and neutrons in an atom's nucleus.

16

number of neutrons =

mass number - atomic number

17

How are elements arranged in the periodic table?

In order of their atomic number.

18

How are electrons arranged around the nucleus?

In electron shells.

19

Which shell represents the lowest energy level in an atom?

The shell nearest to the nucleus.

20

How many electrons can the first energy level hold?

2 electrons

21

How many electrons can the second shell hold?

8 electrons

22

What is the maximum electronic structure?

[2,8,8,2]

23

What is the electronic structure of Na?

[2,8,1]

24

How are the elements in each group of the periodic table similar?

They have the same of electrons in the outer shell.

25

What are Group 0 elements known as?

Noble gases because of their un reactivity.

26

Why are the noble gases chemically stable?

Their electron shells are full which means they have no need to react.

27

What charge to metal ions have?

Positive

28

What charge to non-metal ions have?

Negative

29

What is ionic bonding?

The chemical bonding of atoms whereby electrons are transferred.