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Details

C2
AQA - Atomic Structure
22
Chemistry
10th Grade
10/25/2011

Additional Chemistry Flashcards

 


 

Cards

Term

 

What are atoms made up of?

Definition

 

Protons, neutrons and electrons

Term

 

Which two parts of the atom have equal and opposite electric charge?

Definition

 

Protons and electrons

- there is always the same number of protons as there is electrons

Term

Which part of the atom is POSITIVELY charged?

 

Which part of the atom is NEGATIVELY charged?

Definition

POSITIVELY: Protons

 

NEGATIVELY: Electrons

Term

 

Which part of the atom has no electrical charge?

Definition

 

Neutrons - they are neutral

Term
 
Where are the parts of the atom found on the atomic structure diagram?
Definition

Protons and neutrons - Nucleus

 

Electrons - Shells

Term

 

Elements reaxt to form compounds by gaining or losing, or even sharing electrons

Definition
Term

 

What is covalent bonding?

Definition

 

The process of sharing electrons

Term

 

What is ionic bonding?

Definition

 

The process of transferring electrons

Term
[image]
Definition

Magnesium is in Group 2. It has two electrons in its highest energy level. When these electrons are lost, a magnesium ion Mg2+ is formed.

A magnesium ion has the same electronic structure as a neon atom (Ne).

(Metal Ions) 
Term
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Definition

Oxygen is in Group 6. It has six electrons in its highest energy level. It gains two electrons from one or two other atoms in reactions, forming an oxide ion, O2-.


(Non Metal Ions)

Term

Consider reactions between metals and non-metals, for example;

sodium + chlorine → sodium chloride


 In each of these reactions, the metal atoms give electrons to the non-metal atoms. The metal atoms become positive ions and the non-metal atoms become negative ions.

Definition
[image]
Term


Do ionic compounds have high or low boiling and melting points?

Definition

 

HIGH

Term

 

What is the definition of Ionic Bonding?

Definition
[image]
Term
[image]
Definition
Term
[image]
Definition
[image]
Term
[image]
Definition
[image]
Term

 

Do Covalent Bonds have high or low boiling and melting points?

Definition

 

LOW

Term

 

Giant Covalent Structures and their properties:

Definition
[image]
Term


The table shows some of the units used to measure length. As you go down the table, each unit is 1,000 times smaller than the one above it.

Definition
[image]
Term

 

Why are metals good conductors of heat and electricity?

Definition

 

Because the free electrons carry a charge or heat energy through the metal. 

 
Term

 

Why are metals "malleable" and "ductile"?

 

Malleable -  re-shapable

Ductile -  able to deform

Definition



The free electrons allow metal atoms to slide over each other.

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