Chemistry 1 Atoms, Elements and compounds Core GCSE

Question	Answer
Image: chem_1 (image/png)	C1
What does each of these substances have in common: CH4, HCl, MgO, Ne, 02, SO2	They are all compounds
What are the names and numbers of the particles in an atom of sodium (Atomic number 11, mass number 23)	Electrons and Protons = 11 Neutrons = 12
What determines the order of the elements in the periodic table	The group numbers
Explain why boron and aluminium are both in the same group on the periodic table	Because they all have 3 electrons on there outer shell and are metals
Name the type of bond in a metal and non metal bond	Ionic
Name the type of bond in a bond containing two non metals	Covalent
Explain what happens to the atoms when a sodium atom reacts with a chlorine atom	Positive and Negative attract = chemically bond together
Calcium carbonate decomposes when heated to produce calcium oxide and carbon dioxide. 20.0g of calcium carbonate produce 11.2 of calcium oxide. What mass of carbon dioxide would be produced. Explain How	8.8g Take away mass produced (11.2g) from Original Mass (20.0g)
Image: atomic_structure.gif_2 (image/png)	Image: atomic_structure.gif (image/gif)
What does each of these substances have in common: Ca, H2, Ne, O2, SO2	They are all elements

Resource summary

	Created by Chloe Roberts over 10 years ago