What is a Chemical Change? A chemical change is one where no new/a new substance is formed. The change is often accompanied with other changes like a C__________ change or T___________ change. Chemical changes are often easy/difficult to reverse. Give an example: What is a Physical Change? A physical change is one where no new/a new substance formed. Physical changes are usually easy/difficult to reverse Give an example:
An element is A molecule is A mixture is A compound is
The periodic table is split in different ways: Groups Periods M________ and Non-M__________ Can you fill in the missing features of M’s and Non-M’s??
Chemical Reactions with Acids Acid + Alkali ------> Salt + W________ Eg. Hydrochloric + Sodium-------> Acid Hydroxide This is called a N______________ Reaction. Acid + Metal --------> S_____ + H__________ Eg. Sulphuric + Iron ----> Acid Acid + Metal Carbonate-----> S_________ + W___________ + C__________ D__________ Eg. Nitric + Zinc ---------> Acid Carbonate
Chemical Reactions What 3 things do we need for combustion? What gas in the air reacts with metals when put in a flame?
pH Scale:
Label the missing words
The name of the SALT comes from the M__________ part e.g. sodium hydroxide would give a sodium salt. The name of the A________ indicates the second part of the name of the S_______.