What are metals for Class 2?

What are metals for Class 2?

Metals are minerals like iron or lead that are found underground in rocks. These are separated from the rocks using heat. Metals are very useful materials. Metals have many properties, such as strength, toughness, and stiffness.

What are groups in the periodic table BBC Bitesize?

Groups and periods

• the horizontal rows are called periods.
• the vertical columns are called groups.
• elements in the same group are similar to each other.
• the metals are on the left and the non-metals are on the right.

What are group 2 metals used for?

Group 2 elements are used for both everyday and chemical applications. They are used in antacids as magnesium oxide. Barium is used to track the movement of meals on x-rays in the field of gastroenterology. Calcium oxide and calcium carbonate are used to remove sulfur gas from reactions of fossil fuels.

Why is group 2 reactive?

Alkaline Earth metals are very reactive because they readily give up their two valence electrons to achieve a full outer energy level, which is the most stable arrangement of electrons.

What are metals and their properties?

Metals are lustrous, malleable, ductile, good conductors of heat and electricity. Other properties include: State: Metals are solids at room temperature with the exception of mercury, which is liquid at room temperature (Gallium is liquid on hot days).

What are Group 2 elements called?

Lr. Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).

How many electrons does Group 2 have?

2 valence electrons
Group 1 has 1 valence electron. Group 2 has 2 valence electrons. Group 13 has 3 valence electrons. Group 14 has 4 valence electrons.

What are group 2 elements called?

Why do group 2 metals increase in reactivity?

Reactivity. Reactivity of Group II elements increases down the group. This can be explained by the increase in ease at losing two outer electrons as we descend the group. The loss of electrons becomes easier due to the decreasing ionisation energy required.

How do group 2 elements react?

All Group 2 elements tarnish in air to form a coating of the metal oxide. They react violently in pure oxygen producing a white ionic oxide. When these metals (M) are heated in oxygen they burn vigorously to produce a white ionic oxide, M2+O2-.

What is a metal ks3?

They have high melting and boiling points meaning they are solid at room temperature. They are good conductors of heat and electricity. They are shiny in their appearance. They are malleable.

Where do metals come from BBC Bitesize?

Metals come from an ore that is mined from the ground. A huge amount of heat energy is needed to extract the metal from the ore – this energy often comes from fossil fuels . Metal ores are non-renewable , meaning they are a finite resource and therefore recycling metal is important.

What are group 2 metals called?

The Alkaline Earth Metals
Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).