Which of the following statements is true about physical and chemical changes?

Which of the following statements is true about physical and chemical changes?

The true statement about physical changes and chemical changes is- C) chemical changes always produce new substances. There are two types of change in nature- physical change and chemical change. It is a temporary change in which no new substances are formed but only the physical properties of substances are changed.

Which of the following statement is incorrect about physical change?

Answer: A. No new substance is formed

Which of the following statement is true about physical change?

Explanation: Physical changes involve a change in the shape of a substance but it does not involve the breaking of bonds. Physical changes are reversible, unlike chemical changes.

Which of the following statement is correct about chemical change?

The correct answer is Chemical reaction involves breaking and making of chemical bonds. Chemical reaction means breaking and making of chemical bonds to convert product from reactant. It may absorb or release energy during the process which is named as Endothermic and exothermic reaction respectively.

Which statement is true about chemical and physical changes?

Which statement is true about chemical and physical changes? Matter is conserved in physical changes, but not chemical changes. Matter is conserved in both chemical and physical changes. Matter is conserved in chemical changes, but not physical changes.

Which of the following are physical changes and which are chemical changes?

Explanation: Physical changes involve a change in the shape of a substance but it does not involve the breaking of bonds. Physical changes are reversible, unlike chemical changes.

Which of the following statement is correct about a physical change?

The correct statement regarding physical change is- (b) In physical change, no new substance is formed. The change in which there is no formation of a new substance is called a physical change. In a physical change, the size, colour and state of matter may be changed but its chemical composition remains the same.

What statement is true about physical change?

A change in physical properties is called a physical change. Physical changes do not alter the identity of a substance. Pounding, pulling, cutting, dissolving, melting, or boiling do not produce a new substance with new properties, so they are all physical changes.

Which of following is not a physical change?

D – Combustion of Liquefied Petroleum Gas (LPG) is not a physical change. It is a chemical change because combustion of LPG produces new substances. A lot of heat is produced along with carbon dioxide and water vapour during this reaction. It is also irreversible in nature.

Which statement is true about a physical change?

Explanation: Physical changes involve a change in the shape of a substance but it does not involve the breaking of bonds. Physical changes are reversible, unlike chemical changes.

Which of the following is a physical change?

The correct statement regarding physical change is- (b) In physical change, no new substance is formed. The change in which there is no formation of a new substance is called a physical change. In a physical change, the size, colour and state of matter may be changed but its chemical composition remains the same.

Which of the following is true about a physical change to a substance?

The correct answer is Melting of ice. Among all the given options, Melting of ice involves a physical change. A physical change involves the changes of state from a solid to a liquid or a gas and vice versa. Boiling water, Ice melting into water is an example of this conversion.

Which is true about chemical change?

The chemical reaction produces a new substance with new and different physical and chemical properties. Matter is never destroyed or created in chemical reactions. The particles of one substance are rearranged to form a new substance. The same number of particles that exist before the reaction exist after the reaction.

Which of the following is a chemical change?

Growth of a plant, rusting of iron, cooking of food, digestion of food, and burning the candle are chemical changes because here is the chemical composition of the substance changes.

Which of the following is NOT correct statement for chemical change?

Heat may be given out as well as absorbed during chemical reactions. Hence option (a) is the incorrect statement.

What is the correct definition of a chemical change?

a usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance: The formation of rust on iron is a chemical change.

Which statement is true about chemical change?

The chemical reaction produces a new substance with new and different physical and chemical properties. Matter is never destroyed or created in chemical reactions. The particles of one substance are rearranged to form a new substance. The same number of particles that exist before the reaction exist after the reaction.

Which statements is true about physical change?

Explanation: Physical changes involve a change in the shape of a substance but it does not involve the breaking of bonds. Physical changes are reversible, unlike chemical changes. The melting of ice is a physical change.

What is the same about physical and chemical changes?

What is the difference between physical and chemical changes? A physical change in a substance doesn’t actually change what the substance is. It remains the same. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.

What are 5 examples of physical change?

Examples of Physical Changes

  • Crushing a can.
  • Melting an ice cube.
  • Boiling water.
  • Mixing sand and water.
  • Breaking a glass.
  • Dissolving sugar and water.
  • Shredding paper.
  • Chopping wood.

What is an example of both physical and chemical change?

Melting and burning of candle wax is an example of both physical and chemical changes. Answer: Burning of wood is a example of both physical and chemical change. When wood is burnt the moisture present in it turns to vapour ,it is a physical change while it burns and generate CO2 is a chemical change.

What are 5 examples of chemical changes?

Some chemical change examples in our everyday life are mentioned below.

  • Burning of paper and log of wood.
  • Digestion of food.
  • Boiling an egg.
  • Chemical battery usage.
  • Electroplating a metal.
  • Baking a cake.
  • Milk going sour.
  • Various metabolic reactions that take place in the cells.

Which is true for a physical change?

The correct answer is Melting of ice. Among all the given options, Melting of ice involves a physical change. A physical change involves the changes of state from a solid to a liquid or a gas and vice versa. Boiling water, Ice melting into water is an example of this conversion.

Which is true about physical change?

A change in physical properties is called a physical change. Physical changes do not alter the identity of a substance. Pounding, pulling, cutting, dissolving, melting, or boiling do not produce a new substance with new properties, so they are all physical changes.

Which statements are related to physical change?

During a physical change the physical properties of a substance like shape, size or state of matter changes but there is no formation of a new substance. This change is reversible in nature and hence it is temporary in nature.

Leave a Comment