Answer:
a screwdriver rusting when left in a pail of water
Explanation:
In case of chemical change we can say that there must be a chemical reaction due to which there will be a change in the chemical reactants.
As we can see the given options
1). wind breaking down a rock into smaller pieces
There is no chemical reaction between them and it just a physical change of big size to smaller size
2). a leaf falling off of a tree during a storm
As we know that here also leaf detach from the tree so there is only physical change again.
3). a screwdriver rusting when left in a pail of water
Here we will have a chemical change due to which iron made its oxide due to chemical reaction of iron and oxygen
4). a block of ice melting in the sun
This is also physical change in which water molecules change from its solid state to liquid state
So here correct answer will be
a screwdriver rusting when left iwind breaking down a rock into smaller pieces
a leaf falling off of a tree during a storm
a screwdriver rusting when left in a pail of water
a block of ice melting in the sunwind breaking down a rock into smaller pieces
a leaf falling off of a tree during a storm
a screwdriver rusting when left in a pail of water
a block of ice melting in the sunwind breaking down a rock into smaller pieces
a leaf falling off of a tree during a storm
<em>a screwdriver rusting when left in a pail of water
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