chemistry specification part 2

Question 1

how are elements arranged in the periodic table?

Answer 1

elements are arranged in order of increasing atomic number, in rows called periods, and elements with similar properties are placed in the same vertical columns called groups

Question 2

how are ionic bonds formed?

Answer 2

formed by the transfer of electrons between a non-metal and a metal

Question 3

why do compounds end in ide and ate?

Answer 3

ide means that there are more than two elements.
AAte means there are more than 3 elements,one of which includes oxygen

Question 4

what is the structure of ionic compounds?

Answer 4

consisting of a regular arrangement of ions held together by strong electrostatic forces (ionic bonds) between oppositely-charged ions

Question 5

how are covalent bonds formed?

Answer 5

when a pair of electrons is shared between two atoms

Question 6

what are the properties of ionic compounds?

Answer 6

-high melting points and boiling points, in terms of forces between ions (electrostatic)
-they conduct electricity when
molten and in an aqueous solution

Question 7

what are the properties of covalent compounds?

Answer 7

-low melting points and boiling points, in terms of forces between molecules (intermolecular forces)
-poor conduction of electricity

Question 8

describe metals

Answer 8

malleable, shiny, high boiling point, conducts electricity

Question 9

what is sublimation

Answer 9

solid to gas

Question 10

what is a polymer?

Answer 10

big molecules containing chains of smaller molecules called monomers