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What are the characteristics of chemical change ?

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Important Questions on Atoms Combining

MEDIUM
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change
Write P for physical change and C for chemical change.
A candle is burning _____.
MEDIUM
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change
Changes in which new substances are formed are called _____ changes.
EASY
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change

A _____ change is also called a chemical reaction.

(Clues- reversible, chemical, physical, air, chemical)

EASY
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change

Write P for physical change and C for chemical change.

A tree burns to form ashes _____.

MEDIUM
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change
Formation of rust on iron is a _____ change. (chemical, physical)
EASY
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change
In a chemical change a new _____ is formed.
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Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change

Fill in the blanks by choosing the correct words from the list given below:

List: Galvanisation, physical, calcium carbonate, new, calcium hydroxide, energy, substance, saturated, sodium carbonate, moist.

_____ substances are formed during a chemical change.
EASY
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change
A pure substance which contains two different kinds of atoms is called _____.
MEDIUM
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change
Two or more atoms of _____ elements combine together chemically to form a compound. (Same/ Different)
EASY
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change
Formation of manure from leaves is a _____ change. (chemical / physical)
MEDIUM
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change

Complete the analogies:

Saline water : salt in water :: soda water:_____ in water.

MEDIUM
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change

A chemical change is usually _____ and permanent.

EASY
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change
Changes in which new substances are formed are called _____ changes.
MEDIUM
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change

Write P for physical change and C for chemical change.

Baking cookies _____.

MEDIUM
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change

Formation of manure from leaves is a _____ change. 

(Clues- reversible, chemical, physical, air, chemical)

EASY
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change
Souring of milk is a _____ change. (physical / chemical)
EASY
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change
The composition of a _____ is fixed.
EASY
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change
A _____ change forms new substances.
MEDIUM
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change
_____ of water proved that water is a compound and not an element. (Colour / Odour / Properties)
MEDIUM
Chemistry>Inorganic Chemistry>Atoms Combining>Compounds, Mixtures, and Chemical Change

Complete the analogies:

Acetic acid : vinegar : :_____: sodium hydrogen carbonate