Exercise 6.3 Reactions of metals with dilute acids
The exercise will give you practice in planning a fair investigation.
investigation into the reactivity of different
Michelle and Justin are carrying out an
metals with dilute acids. They place a small piece of each metal into a test tube of
acid and observe the reaction.
1 How can they tell that a reaction has taken place?
2 How can they tell which metal is more reactive?​

i think it is d. e because the next one is igneous.

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

i do not get it   at all

so she was walking and she stepped on warm jeffy , uh uh uhh dadye i just pooped my pants