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Everything Chemistry
Revise Everything in Chemistry.
Question | Answer |
---|---|
Complete the word equation below to show all the products formed when metal carbonate reacts with an acid. metal carbonate + acid ---> salt + | water + carbon dioxide |
Name two carbonate that reacts with acid. | Sodium Carbonate and Calcium Carbonate |
Explain why limestone buildings are damaged by acid rain. | A chemical reaction takes place which causes the limestone buildings to be weathered |
Give two problems that are caused by quarrying limestone | scarring the earth and destroy natural animal habitat. |
give two ways that quarries can benefit local communities. | Creates job opportunities and more Income. |
What is the charge of an atom? | Zero |
What is an element? | A substance that is made up of one type of atom |
An atom has the same number of ______ and ______ | protons and electrons |
What decides what element and atom is? | The number of protons |
I am in the center of the atom. I contain protons and neutrons | nucleus |
I move around the nucleus in a shell | electron |
I have no charge | neutron |
I am positively charged | proton |
In a neutral atom there are as many of me as there are electrons | proton |
A column in the periodic table is? | Vertical |
On which side of the periodic table are metals? | left |
True or false. Group seven elements are known as noble gases. | false |
What is the symbol for copper? | Cu |
all noble gases are unreactive | true |
Elements in the same group has _______ properties | similar |
What the is the symbol for Calcium? | Ca |
Each element has a different ______ | Symbol |
True or false. Noble gases have a full outer shell of electrons. | true |