What is the example of physical change and chemical change?

Answer 1

Physical Changes

• Change of state (such as from solid to liquid or from gas to liquid)
  • Specific examples of state change include water freezing, alcohol evaporating and dry ice (solid carbon dioxide) subliming
• Absorption of water into a towel
• Crumpling a piece of paper
• Pulling copper into a thin wire - a change of shape, but not a change of composition
• Cutting a material such as wood
• Tearing a piece of tin foil
• Breaking glass
• Deflating a Basketball
• Mixing different solids (such as solid sulfur and iron filings)
• Inflating a volleyball
• Cloud forming in the sky

Chemical changes

• Burning a log of wood
• Mixing an acid with a base, producing water and a salt.
• Photosynthesis - a process in which carbon dioxide and water are changed into sugars by plants.
• Cracking heavy hydrocarbons to create lighter hydrocarbons (part of the process of refining oil).
• Cooking examples: popcorn, cake, pancakes, and eggs
• Oxidation examples: rust or tarnishing
• Combustion
• Mixing chemicals
• Rotting of fruit
• Cooking rice
• Explosion of fireworks
• Tarnishing silver
• Lighting a match
• Chewing/digesting food
• Rusting nail
• Burning gas in a stove
• Oxidizing food for energy
• Roasting a marshmallow
• Adding food coloring to icing
• Frying an egg
• Burning a magnesium strip

The following can indicate that a chemical change took place, although this evidence is not conclusive:

• Change of color (for example, silver to reddish-brown when iron rusts)
• Change in temperature or energy, such as the production (exothermic) or loss (endothermic) of heat
• Change of form (for example, burning paper)
• Light, heat, or sound is given off
• Formation of gases, often appearing as bubbles
• Formation of precipitate (insoluble particles)
• The decomposition of organic matter (for example, rotting food)

Answer 2

A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.

Answer 3

Physical changes are changes in the current state of the compound. Think of a block of ice (solid water). First you melt the ice and turn it into a cup of liquid water (that's a physical change). One step farther would be to boil the water until the liquid water becomes a vapor (that too is a physical change). A chemical change is a change of materials into another, new materials with different properties and one or more than one new substances are formed. It results when a substance combines with another to form a new substance (synthesis or either decomposes to form more substances).

Answer 4

A physicaal Change is something that can be reversed. EXAMPLE folding a piece of paper it's stil paper but in different form and shape.

A chemical Change is something that cannot be reversed. EEXAMPLE burning a piece of paper it turns into ashes and cannot get back into the whole paper form.

Answer 5

Physical changes involve states of matter and energy. No new substance is created during a physical change, although the matter takes a different form. The size, shape, and color of matter may change. Physical changes occur when substances are mixed but don't chemically react.

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Answer 6

Chemical change is a change in which a new substance is formed.ex-burning of paper or log,digestion of food,cooking,baking cake,milk turning sour,etc

Physical change is a change in which no new substance is formed.ex-tearing of paper,evaporation or freezing or melting of water,breaking vase,sharing ur pencil,etc.

Answer 7

The general properties of matter such as color, density, hardness, are examples of physical properties. Properties that describe how a substance changes into a completely different substance are called chemical properties. Flammability and corrosion/oxidation resistance are examples of chemical properties.

EXAMPLE: Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.

Answer 8

An example of a physical change is melting ice into water because the substance remains water at a molecular level. An example of a chemical change is burning wood because it undergoes a chemical reaction to form ash and smoke.

Answer 9

PHYSICAL CHANGE 1. Aluminum foil is cut in half

2. Clay is molded into a new shape

3. Butter melts on warm toast

4. Water evaporates from the surface of the ocean

5. A juice box in the freezer freezes

6. Rubbing alcohol evaporates on your hand

7. Crumpled paper

8. Water turned into ice

9. Grating of cheese

10. Cutting of wood

CHEMICAL CHANGE

1. Rust forms on a nail left outside

2. Milk goes sour

3. You fry an egg

4. Your body digests food

5. A match is lit

6. You take an antacid to settle your stomach

7. Hydrogen peroxide bubbles in a cut

8. Food scraps are turned into compost in a compost pile

9. Gasoline is ignited

10. Jewelry tarnishes

Answer 10

Ice is water in solid state. When ice is heated, it melts to give liquid water this is physical change. When we burn wood, ashes are left out behind & we can't get it back, it is called chemical change.