Metals and their reaction with oxygen
The most reactive metal with oxygen is caesium, followed closely by other alkali metals like potassium and sodium.
Lustrous means having a shine or glow, or being shiny and reflective.
Metals typically exhibit properties like malleability, ductility, high density, high melting/boiling points, and excellent conductivity for heat and electricity.
LOOKING AT THE REACTIONS Of METALS WITH OXYGEN
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Many metals react with oxygen if they get hot enough. we have seen magnesium react with oxygen when you heat it.
When metals react with oxygen, they form metal oxides. The reactivity of the metal determines the speed of the reaction, with highly reactive metals like sodium and potassium reacting quickly.
METALS AND THE PERODIC TABLE
The metals on the periodic table are found predominantly on the left and in the middle, comprising the vast majority of elements. This includes categories like alkali metals, alkaline earth metals, transition metals, lanthanides, and actinides.
Group 1 metals react with oxygen to form different types of oxides, with reactivity increasing down the group.
Potassium and rubidium are two metals with atoms larger than those of sodium. Both are alkali metals in the same group (Group 1) of the periodic table, and as you move down a group, the atomic size increases because each successive element has an additional electron shell.
An additional electron shell is a higher energy level around an atom's nucleus where electrons can exist once they gain enough energy to move from a lower shell.
Sodium's softness, low density, and low melting and boiling points are properties not typical of most metals.
Density is a measure of how much mass is contained in a given volume, indicating how tightly matter is packed together.
Low density describes a substance with a low mass for its size, a low number of people in an area, or a low concentration of particles.
High density in chemistry means a substance has a large amount of mass packed into a small volume, making its matter more concentrated.
It is difficult and dangerous to test sodium for electrical conductivity because sodium is a highly reactive alkali metal that reacts violently with air, water, and oxygen, and can cause explosions or fires.
A stable electrical contact is a reliable connection in a device that ensures a consistent electrical current flows without interruption.
Sodium reacts with air to form sodium oxide and sodium peroxide, which then reacts with moisture and carbon dioxide to form sodium hydroxide and sodium bicarbonate.
The word equation for the reaction of sodium and oxygen is Sodium + Oxygen → Sodium Oxide.
Metal oxides are formed when a metal reacts with oxygen, a process called oxidation.
Metals have different levels of reactivity, which can be arranged in a reactivity series from most to least reactive