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What else can I help you with?
When gas burns you can tell it is a chemical reaction because?
you saw a reaction you smelt something you heard something and you cant get that gas back to its original form
Is firework exploding a chemical or physical change?
I guess it is a chemical change as the exploded fireworks cant be regained back which is possible in a physical change and not in a chemical change.
Examples af a chemical reaction?
Bubbles, and heat change are examples of chemical reactions. When a chemical reaction happens, a compound is formed. It cant be separated. Another example could be change of colour. -making caramel sauce -getting a suntan
What evidence of a chemical reaction might you see by dropping an alka seltzer in water?
When dropping an Alka-Seltzer in water, you may observe fizzing or bubbling, indicating the release of carbon dioxide gas as a result of a chemical reaction between the citric acid and sodium bicarbonate in the tablet. The tablet dissolves in water, causing the reaction to occur.
Why mole concept is used in balancing chemical equation?
mole concept is used in balancing chemical reaction because for balancing a reaction u cant change the numbers such as 1,2,3 etc.. in between the compund so as a whole we are changing outside the compound
Why cant a chemical reaction be put back the same?
cause chemical reactions cant be reversed
Is turning an egg into a pancake a chemical or a physical reaction?
chemical -you cant turn the pancake back into an egg :)
Why cant an unbalanced chemical equation fully describe a reaction?
An unbalanced chemical equation does not accurately reflect the ratio of reactants and products in a chemical reaction, which can affect the stoichiometry of the reaction. Balancing the equation is necessary to ensure that the law of conservation of mass is obeyed and to correctly represent the chemical species involved in the reaction.
How tyo recgonize chemical and physical change?
think if it can be reversed. if it is easially reversed, it is most likely physical. ie. if you bake a cake, you cant make it go back to a batter, so it is a chemical change. if you freeze an ice cube, you can just melt it and it goes back to water, so its a physical change.
When gas burns you can tell it is a chemical reaction because?
you saw a reaction you smelt something you heard something and you cant get that gas back to its original form
Is baked bread a chemical change?
Yes it is because the chemical properties change and it cannot be reversed.
Why can't a candle wax be reversed?
it just cant
Is making crisps from cooking oil and potatoes a reversible change or chemical reaction?
Most cooking processes are chemical reactions. Generally, the reactions are non reversible and once cooked, food cannot be returned to an uncooked state. So, frying potatoes causes a non reversible chemical reaction. The question is not as precise as it might be. Changes can be physical or chemical. They can also be reversible or non reversible but it is important to note that many chemical changes are reversible just as many physical changes are reversible.
What are the differences between the physical and chemical?
in changes. Physical changes can be reversed. E.g. if you were to melt a block of ice, and then freeze it again, it would to some degree be reversed. This is a physical change. However, if you were to burn a peace of toast, the change would be chemical. Once the toast is burnt you cant get it back.
What is a chemical reaction is on the 5th grade level?
A chemical reaction is when two or more substances mix together and change to form new substances. It's like mixing ingredients to bake a cake – you can't go back to the original ingredients once the cake is baked.
Is firework exploding a chemical or physical change?
I guess it is a chemical change as the exploded fireworks cant be regained back which is possible in a physical change and not in a chemical change.
Examples af a chemical reaction?
Bubbles, and heat change are examples of chemical reactions. When a chemical reaction happens, a compound is formed. It cant be separated. Another example could be change of colour. -making caramel sauce -getting a suntan
