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What are three things that are often indications of chemical changes?
Wiki User
∙ 13y ago
Chemical changes can be identified by
1. Color change
2. Fizzing
3. Temperature changes
4. Odor changes
5. Change in the state of matter (solid, liquid, gas)
Wiki User
∙ 13y ago
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Which occurs more often on earth physical changes or chemical changes?
what involves both chemical and physical change on earths surface
What occurs more often on earth physical or chemical changes?
Physical, :-)
Do chemical changes affect the chemical structure of a substance?
yes chemical properties do change a substance physical properties just change the physical shape or look!!!
How is physical. change different than a chemical. change?
physical changes can be not permanent like solid-liquid-vapour chemical changes are permanent if not reversible
What kind of change such as a change of state the substance of the whole changes but its underlying structure remains the same?
In changes in which the molecular structure of a substance remains constant, such as changes of state, we often refer to these changes as Physical Changes. If the molecular structure is altered it would be a Chemical Change.
Is fashioning a table leg from a piece of wood chemical or physical changes?
Physical. Physical changes include things such as changing shape or color. Chemical changes change the chemical properties of a material, often during a chemical reaction.
Which occurs more often on earth physical changes or chemical changes?
what involves both chemical and physical change on earths surface
Is a chemical change also called a chemical reaction?
Chemical changes are most often reffered to as chemical reactions and are represented by chemical equations.
What occurs more often on earth physical or chemical changes?
Physical, :-)
Do chemical changes affect the chemical structure of a substance?
yes chemical properties do change a substance physical properties just change the physical shape or look!!!
How is chemistry essential to today's world and how atoms and the periodic table and chemical reactions relate to anything going on in the world today?
Chemistry is the study of the composition of and characteristic changes in the composition of matter, what things are made of, and how that changes. Chemistry is important to life, it is the foundation of biology. All living things are "chemical machines" or "chemical factories". Life requires changes in composition, what things are made of, like turning plants into the meat, muscles of an animal, this is a chemical change. Plants converting soil ,air and water into leaves and branches is a chemical change. Life, all life, requires chemistry. Chemical reactions that produce light and heat are often used to produce useful energy, for example the burning of fossil fuels for locomotion or to generate electricity.
Which are the chemical reactions in which colour changes takes place?
often the oxidation number is changed. Sometimes the conjugation would change in an organic. Tow things mainly account for colour. Conjugation and lone pairs
How is physical. change different than a chemical. change?
physical changes can be not permanent like solid-liquid-vapour chemical changes are permanent if not reversible
What are two kinds of changes that occur in matter?
The two types of changes in matter that it goes through is physical change and chemical change... trust me, we are learning this at school.
What kind of change such as a change of state the substance of the whole changes but its underlying structure remains the same?
In changes in which the molecular structure of a substance remains constant, such as changes of state, we often refer to these changes as Physical Changes. If the molecular structure is altered it would be a Chemical Change.
What chemical makes things float?
Often the element helium (atomic symbol: He) often makes objects float, most commonly balloons.
What is the difference between physically and chemical changes?
A chemical change is when something cannot be reversed and often a precipitate (solid) is formed. While a physical change can be reversed e.g bending a piece of wire.
