Fechar
How can you tell that the compound H2O has covalent bonds?
Which of these compounds have ionic bonding?
Kbr, Hcl, H2S, Na2O, Cl2O, MgO
Explain what happens to the atoms of the elements when lithium reacts with fluorine
Why is the formula of sodium chloride NaCl but magnesium chloride is MgCl2?
Write the formula for each of these compounds:
calcium fluoride, sodium sulfate, magnesium nitrate, copper (II) chloride, iron(III) hydroxide
How are the atoms arranged in a metal?
What forces hold metal atoms in place in their giant structures?
What is a compound?
Which electrons in an atom are involved in bonding?
What happens to the electrons in atoms when ionic bonds are formed?
What happens to the electrons in atoms when covalent bonds are formed?
Why do the elements in group 1 form ions with a single positive charge?
Why do the elements in group 7 form ions with a single negative charge?
Which of the following substances are made of molecules?
KCl, H2O, C2H6, MgO, CO2, NaNO3
Why can the structure of a metallic element like copper be represented by lots of small spheres the same size packed together?
Write the correct formula for each of the following:
lithium chloride, sodium oxide, calcium fluoride, magnesium hydroxide, sodium sulfate, calcium nitrate
Why do ionic compounds have giant structures?
Explain why silicon (in group 4) has a giant structure
Explain how the atoms in a piece of sodium metal are held together
