4 Metals

Question 1

What are the properties of metals?

Answer 1

• relatively high boiling points
• good conductors of electricity
• good conductors of heat
• high densities

Question 2

What are the characteristic properties of metals?

Answer 2

• Hi boiling points
• Good conductors of electricity in solid and liquid state
• Malleable and ductile
• high-density
• Good conductors of heat
• Lustrous appearance
• Low electronegativity
• Low ionisation energy
• React by losing electrons

Question 3

What are the main differences between main group and transition metals?

Answer 3

• Transition metals are harder
• Transition metals are more dense
• Transition metals have higher melting points
• Some transition metals have strong magnetic properties
• Transition metal compounds tend to be brightly coloured

Question 4

What is metallic bonding?

Answer 4

Electrostatic force of attraction between a lattice of positive ions and delocalised valence electrons. The lattice of cations is surrounded by a ‘sea’ of delocalised electrons.

Question 5

What is the metallic bonding model useful for?

Answer 5

Can be useful to explain the properties of metals, including their malleability, thermal conductivity generally high melting point and electrical conductivity

Question 6

What are some properties of group 1 metals?

Answer 6

They are extremely reactive with water

Question 7

By reacting metals with acids, what
Can we do?

Answer 7

Can be used to place metals in order of reactivity, which is called the reactivity series

Question 8

Where are the most reactive metals found in the periodic table?

Answer 8

The bottom left hand side

Question 9

What are alloys?

Answer 9

Mixtures of metallic elements with other elements. Alloys modify the properties of elements to make them more useful.
Alloys are often harder and melt at lower temperatures than pure metals .

Question 10

What are different forms of metallic nano particles

Answer 10

Include nanoparticles, nanorods, and nanowires.
These have applications in medical pharmaceutical, electronic environmental an engineering sectors

Question 11

What does heat treatment do two metals?

Answer 11

Change is the size and arrangement of crystals in metals

Question 12

What does the term annealing mean?

Answer 12

The heating and the allowing of a metal to slowly cool to release internal stresses

Question 13

What do ionic compounds form?

Answer 13

A crystal lattice made up of positive and negative ions

Question 14

Define ionic bonding

Answer 14

The 3-D lattice is hell together, strongly by electrostatic forces of attraction between the cation and anion’s the electrostatic forces of attraction, I called ionic bonding

Question 15

What are the characteristics of ionic compounds?

Answer 15

• High melting point and boiling points, but solid at room temperature
• Hard but brittle
• Neither malleable or ductile
• do not conduct, electricity as a solid
• good conductors of electricity in liquid state or as a solute
• Very from soluble to insoluble

Question 16

Why are ionic compounds hard and have high, melting point and boiling points?

Answer 16

Because of the strong forces of attraction between positively and negatively charged ions in the crystal lattice. If the like charges lineup, repulsion will cause the solid to crack or shatter.

Question 17

Why are ionic compounds useful?

Answer 17

Because of the physical properties, such as hardness and high melting point

Question 18

What do the electron configurations of ionic compounds look like?

Answer 18

Ions in ionic compounds, have stable, electron configurations, identical to that of noble gases.

Question 19

What are the rules when writing ionic compound formula?

Answer 19

• Ions that contain two or more atoms of different elements, I called polyatomic ions
• If a chemical formula contains more than one polyatomic ion, the formula of the iron is placed in brackets with a number of irons, written as subscript after the brackets

Question 20

What rule applies when naming ionic compounds

Answer 20

• The name of the metal iron is the same as the name of the metal
• Simple non-metal irons, take the name of the atom, but and then ide
• Polyatomic, anion’s containing oxygen, usually and in ite or ate
• For metals that form ions with different charges. The charge on the iron is shown by placing a Roman numeral after the name of the metal.