RBSE Class 10 Chapter 3 Metals and Non-metals

Fill in the blanks

The property of metals that allows them to be beaten into thin sheets is called ______.
The ability of metals to be drawn into thin wires is known as ______.
Metals like sodium and potassium are stored in ______ to prevent their reaction with air.
The metal that is liquid at room temperature is ______.
The process of forming a protective oxide layer on aluminium is called ______.
Gold is alloyed with ______ or ______ to make it harder for use in jewellery.

Metals react with oxygen to form ______.
The product formed when sodium reacts with water is ______.
Magnesium reacts with dilute hydrochloric acid to form ______ and hydrogen gas.
The highly reactive metals such as potassium and sodium react vigorously with ______ to form alkalis and hydrogen gas.
Amphoteric oxides react with both ______ and ______.
The reactivity of metals can be arranged in a list called the ______ series.

When a more reactive metal displaces a less reactive metal from its salt solution, it is called a ______ reaction.
The reaction 2Mg(s)+O2(g)→2MgO(s)2Mg(s) + O_2(g) \rightarrow 2MgO(s) shows that magnesium combines with ______ to form magnesium oxide.
Metals such as iron react with steam to form ______ and hydrogen gas.
Metals like copper and silver do not react with dilute ______ acid.
The gas evolved when a metal reacts with dilute acids is ______.
The process in which a pure metal is deposited at the cathode during electrolysis is called ______ refining.

Ionic compounds are formed by the transfer of ______ from one atom to another.
Ionic compounds generally have ______ melting and boiling points.
The ionic compound formed by the combination of sodium and chlorine is ______.
Ionic compounds conduct electricity in the ______ or ______ state.
When metals react with non-metals, they form ______ compounds.
Sodium cations and chloride anions are held together by strong ______ forces in sodium chloride.

The impurities present in ores are called ______.
The process of heating carbonate ores in limited air to form oxides is called ______.
The extraction of metals from their ores and refining them is called ______.
In the thermit reaction, the metal ______ is reduced by aluminium to produce molten iron.
Metals at the top of the reactivity series are extracted by ______ reduction.
The method of protecting iron from rusting by coating it with zinc is called ______.

The property of metals that allows them to produce a sound when struck is called ______.
Metals are generally good conductors of heat, with ______ and ______ being the best conductors.
Non-metals like ______ and ______ exist as gases at room temperature.
Bromine is the only non-metal that exists in a ______ state at room temperature.
The non-metal ______ can exist in different allotropes, such as diamond and graphite.

A metal oxide that shows both acidic and basic properties is called an ______ oxide.
The oxide of magnesium dissolved in water produces ______, which is basic in nature.
The reaction of sodium with cold water produces ______ and hydrogen gas.
When calcium reacts with water, it starts floating due to the formation of ______ gas bubbles on its surface.
Non-metals react with oxygen to form ______ oxides, which are acidic in nature.

The reaction of iron with copper sulphate produces ______ and copper.
The process of depositing a thin layer of zinc on iron to prevent rusting is called ______.
The type of reaction where heat is released, as seen in the thermit process, is called ______.
During the electrolysis of molten sodium chloride, ______ gas is released at the anode.
The reaction of aluminium with dilute hydrochloric acid produces ______ and aluminium chloride.
A metal that does not react with water, even in the form of steam, is ______.
The process of obtaining pure aluminium from its ore bauxite involves the electrolytic reduction of ______ oxide.

Ionic compounds are brittle and break when subjected to ______.
The cation in magnesium chloride is ______.
The compound CaCl2\text{CaCl}_2 contains calcium ions and ______ ions.
Ionic compounds do not conduct electricity in their solid state due to the lack of ______ ions.
The electrostatic forces in ionic compounds are also referred to as ______ forces.

The metals ______ and ______ are found in nature in their free state because of their low reactivity.
The impurities removed from ores during metallurgy are known as ______.
The process of heating sulphide ores strongly in the presence of excess air is called ______.
The alloy of copper and zinc is called ______.
The alloy of copper and tin is called ______.
The presence of moisture and ______ is essential for the rusting of iron.
The corrosion of copper produces a green coating of ______.
The brown flaky substance formed on iron during rusting is called ______.