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In a chemical change, you produce a substance(s) that you did not have before, with a completely different chemical composition. For example, when you combine vinegar and baking soda, a reaction occurs, and when that reaction is completed, you no longer have vinegar or baking soda. You have new substances composed of a rearrangement of the atoms of the stuff you had before. Evidence of a chemical change can include, but is not limited to, the following: color change, smell, temperature change, formation of bubbles, formation of a precipitate.
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What is always a characteristic of a chemical change but not always a characteristic of a physical change?
When a chemical change takes place, the chemical structure of particles involved changes (i.e. one or more new substances are formed). In a physical change, the physical state of the particles involved changes (e.g. a solid melts and becomes a liquid). The chemical structure of the particles does not change, and no new substance is formed.
Is fireworks a physical change?
Yes, fireworks involve a chemical reaction where the materials inside the firework combine to produce light, heat, and sound. This chemical reaction is not reversible, so it is considered a chemical change rather than a physical change.
What does a chemical change form?
A chemical change forms new substances with different chemical properties from the original substances involved in the reaction. This can include changes in color, odor, temperature, or state of matter.
Is grilling of meat a physical change?
Grilling meat is a physical change because the heat from the grill causes the protein in the meat to denature and change texture, color, and taste. However, the chemical composition of the meat remains the same.
Is diffusion a physical or chemical change?
Diffusion is a physical change because it only involves the movement of particles from an area of high concentration to low concentration without any change in the chemical makeup of the substances involved.
Is a plant using Co2 and H20 to form 02 and sugar a chemical or physical change?
A chemical change. If the identity of of the chemicals involved change in identity, it is a chemical change.
What is always involved in physical or chemical change in matter?
Energy is always involved.
Is energy transfer involved in every physical and chemical change?
No
Is energy involved in every physical and chemical change?
It is true.
What type of change is involved in rusting of iron name the product formed?
Chemical change
Is salt disolving in chemical change?
Dissolved sodium chloride may be involved in chemical reactions.
What is always a characteristic of a chemical change but not always a characteristic of a physical change?
When a chemical change takes place, the chemical structure of particles involved changes (i.e. one or more new substances are formed). In a physical change, the physical state of the particles involved changes (e.g. a solid melts and becomes a liquid). The chemical structure of the particles does not change, and no new substance is formed.
Is using up your phone battery a chemical change?
No. But there are chemical changes involved in the battery, if that's what you mean.
What chemist would study chemical change?
Practically all chemists are involved in the study of chemical changes.
Is fireworks a physical change?
Yes, fireworks involve a chemical reaction where the materials inside the firework combine to produce light, heat, and sound. This chemical reaction is not reversible, so it is considered a chemical change rather than a physical change.
How is energy involved in piysical and chemical change?
Energy can be absorbed or released in a chemical or physical change, it is not destroyed or created. It simply assumes a different form.
What does a chemical change form?
A chemical change forms new substances with different chemical properties from the original substances involved in the reaction. This can include changes in color, odor, temperature, or state of matter.
