Which two of these are chemical reactions? Tick two boxes.

- You dissolve a spoonful of sugar in water.
- Bread goes brown in the toaster.
- You take an ice lolly out of the freezer and it starts to melt.
- Frost forms on the grass on a cold night.
- You strike a match to light a Bunsen burner.

Question

Which two of these are chemical reactions? Tick two boxes.

- You dissolve a spoonful of sugar in water.
- Bread goes brown in the toaster.
- You take an ice lolly out of the freezer and it starts to melt.
- Frost forms on the grass on a cold night.
- You strike a match to light a Bunsen burner.

tadvisohil886 · Answer

The second one and the fifth one. 
 Bread goes brown in toaster and lighting a burner. 
 Reason: - Both the actions involve combustion; which is a chemical change.

darknessboy · Answer

Strike a match and a spoon of sugar

Anonymous · Answer

The two processes that are chemical reactions are 'Bread goes brown in the toaster' and 'You strike a match to light a Bunsen burner.' These involve changes that create new substances, while the others are physical changes that do not alter chemical identities. 
 ;

Which two of these are chemical reactions? Tick two boxes. - You dissolve a spoonful of sugar in water. - Bread goes brown in the toaster. - You take an ice lolly out of the freezer and it starts to melt. - Frost forms on the grass on a cold night. - You strike a match to light a Bunsen burner.

Answer (3)

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Which two of these are chemical reactions? Tick two boxes.

- You dissolve a spoonful of sugar in water.
- Bread goes brown in the toaster.
- You take an ice lolly out of the freezer and it starts to melt.
- Frost forms on the grass on a cold night.
- You strike a match to light a Bunsen burner.