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Physical reactions:
freezing, boiling, evaporation, condensation etc.
Chemical reactions:
eg. heating, baking, decomposition etc.
Physical mixtures - mixtures in which the substances are easy to separate and get back (done by physical reactions)
eg. flour and rice grains - you can sieve them.
Chemical mixtures - mixtures in which the substances are hard to separate and get back (done by chemical reactions)
eg. cakes - u cant get the eggs and other stuff back.
What else can I help you with?
What is most likely sign that a chemical change has happened?
Two liquids are mixed at room temperature and a gas forms.
Is heat produced when two liquids are mixed a physical change?
No and yes. If the two liquids do not react chemically then its a physical change, called the enthalpy of mixing, heat of mixing, which can be exothermic or endothermic. If the two liquids react then the heat produced would be chemical.
Is separation of 2 liquids by distillation a physical change?
Yes, separation of two liquids by distillation is a physical change. It involves the process of heating a mixture of liquids to vaporize one of the components, and then condensing the vapor back into a liquid form. This process does not involve any chemical reactions or changes in the chemical composition of the substances.
Why does a solid form if you mix two liquids together?
A solid can form when two liquids are mixed together if a chemical reaction occurs that produces a precipitate, a solid substance that forms from the reaction. This can happen when two liquids react to form a new solid compound that is insoluble in the liquid mixture.
What do you call a solid that forms during a chemical reaction when solutions are mixed?
precipitate
Is a two clear liquids are mixed and a yellow color forms a chemical change?
Chemical
What is most likely sign that a chemical change has happened?
Two liquids are mixed at room temperature and a gas forms.
which of the following is the most likely sign that a chemical change has happened?
D.Two liquids are mixed at room temperature and a gas forms.
A precipitate is the name for the that forms when liquids are mixed?
A precipitate is the name for the _____ that forms when liquids are mixed.
What is precipitate is the name for the that forms when liquids are mixed?
A precipitate is a solid that forms when two liquids are mixed together and certain substances in the liquids react and come out of solution. This solid then separates from the liquid mixture and settles at the bottom of the container.
When you mix 2 liquids and it is warm to touch is it a chemical or physical change?
Can be both or either. 1. When mixed, without chemical reaction, liquids can take or release heat; it is a physical phenomenon. 2. But mixed liquids can react and this chemical reaction can also release heat.
What is a solid substance that forms when 2 liquids are formed?
A solid substance that forms when two liquids are mixed is called a precipitate. This occurs when chemical reaction between the two liquids forms a new solid substance that is insoluble in the mixture.
Is heat produced when two liquids are mixed a physical change?
No and yes. If the two liquids do not react chemically then its a physical change, called the enthalpy of mixing, heat of mixing, which can be exothermic or endothermic. If the two liquids react then the heat produced would be chemical.
When two clear liquids are mixed and a yellow color forms is it a chemical change?
Yes, if two clear liquids are mixed and a yellow color forms, it is likely a chemical change. A color change is often an indicator of a chemical reaction taking place, indicating that new substances with different properties are being formed.
Which of the following is the most likely a sign that a chemical change has happened?
D.Two liquids are mixed at room temperature and a gas forms.
Is separation of 2 liquids by distillation a physical change?
Yes, separation of two liquids by distillation is a physical change. It involves the process of heating a mixture of liquids to vaporize one of the components, and then condensing the vapor back into a liquid form. This process does not involve any chemical reactions or changes in the chemical composition of the substances.
What has probably happened if two clear liquids are mixed and a precipitate forms?
wter had ............
