Flashcards

Question 1

How does a catalyst increase the rate of a reaction

Answer 1

It provides an alternative reaction pathway that has a lower activation energy than the uncatalysed reaction

Question 2

What is the radius of an atom

Answer 2

0.1 nanometres

Question 3

What is the radius of a nucleus

Answer 3

1 x 10 to the minus 14

Question 4

In the early 1800s what were the elements arranged by

Answer 4

Atomic mass

Question 5

What group r transition metals

Answer 5

2 and 3

Question 6

How do group 1 metals react with water

Answer 6

Vigorously to produce hydrogen gas and metal hydroxides

Question 7

How do group 1 metals react with Chlorine

Answer 7

Vigourously when heated to form white metal chloride salts

Question 8

How do group 1 metals react with oxygen

Answer 8

Forms a Metal oxide

Question 9

What does what does it mean if group 8 elements are inert

Answer 9

Don’t need to give up or gain electrons

Question 10

What is an element of a full outer shell also called

Answer 10

Stable electronic structure

Question 11

What happens when metals form ions

Answer 11

They lose electrons to form positive ions

Question 12

What happens when non-metals form ions

Answer 12

They gain electrons to form negative ions

Question 13

Ionic compounds have high

Answer 13

Melting and boiling points and have a giant ionic lattice

Question 14

What r giant covalent structures

Answer 14

Macromolecules and have strong covalent bonds and very high melting and boiling points

Question 15

What are the main examples of giant covalent structures

Answer 15

Diamond, graphite and silicon dioxide

Question 16

How many covalent bonds does each carbon atom form in graphene

Answer 16

Three and are arranged in hexagons

Question 17

Limitation of using particle theory to describe the movement of particles

Answer 17

Particles are not solid spheres and doesn’t show forces between particles

Question 18

What is the process where a gas turns into a liquid

Answer 18

Condensation