fill in the blanks with the appropriate words for each of
the statement given below
1.Germination of seeds is considered a____ change
2.If a change is permanent and irreversible it is consideed a___
change
3. Heatin a piece of iron is consedesde a____ change
4.while heating a piece of cool is considered a____ change
5. . A change in which a substance retain its identity is a_____ change
6. Sublimation is_____a change of state of mater
7. Sublimation involves a ____ change
8. During Sublimation a solid on heating turns directly into ____ and on cooling back to _____
9. Sublimation of iodine is an example of _____ change
please answer......
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Answers
Answer:
1)Irreversible
2)Irreversible
3)Irreversible
4)physical
5)physical
6)Irreversible
7)Irreversible
8)gas,liquid
9)physical
Explanation:-
You just need to understand the concept see there are two types of changes that are physical and Chemical
Physical Change:-Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.Examples of physical change include changes in the size or shape of matter. Changes of state—for example, from solid to liquid or from liquid to gas—are also physical changes. Some of the processes that cause physical changes include cutting, bending, dissolving, freezing, boiling, and melting
Chemial Change:-Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.
Examples:-Burning wood.
Souring milk.
Mixing acid and base.
Digesting food.
Cooking an egg.
Heating sugar to form caramel.
Baking a cake.
Rusting of iron.
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Answer:
1.Germination of seeds is considered a
____ change= irreversible change