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Describe the group 1 physical & chemical properties:
1️⃣shiny when freshly cut 1️⃣solid state at RT 1️⃣soft 1️⃣ conducts of electricity
What is the trend of group 1 metals going down the group?
1️⃣ density increases 1️⃣ melting point decreases 1️⃣ reactivity increases (fizzes —> flames)
Why do group 1 elements get more reactive down the group?
Want to loose 1 electron Larger Atomic radius = weaker force of attraction Shielding (more electron shells in way) = weaker force
What do group 1 metals produce when they react with water?
Hydrogen and an alkali (metal hydroxide)
What are some chemical and physical properties of group 7 elements?
7️⃣brittle 7️⃣poor conductors 7️⃣DIATOMIC
How does fluorine appear in RT?
A pale yellow gas (F2)
How does chlorine appear in RT?
Cl2 A green gas
How does bromine appear in RT?
An orange / brown liquid (Br2) Vaporises easily
How does Iodine (I2) appear at RT?
A shiny grey- black crystalline solid
What are the trend of group 7 , going down the group?
7️⃣density increases 7️⃣MP/BP increase 7️⃣ reactivity decreases
What do halogens produce when reacting with metals?
Salt
Why does the reactivity decrease when going down the group?
Must gain 2 electrons More atomic radius = weaker forces of attraction More shielding = weaker forces of attraction More shells , makes it harder to attract 2 electrons
Why do halogens displace other halogens?
If they are more reactive (more higher on in the group) then they kick the other out
What are some chemical and physical properties of group 0 elements
0️⃣all gasses at RT 0️⃣so un reactive (full outer shells) 0️⃣non metals 0️⃣monatomic 0️⃣low BPs
What is the trend of group 0 going down the group?
Boiling point increases (attractive forces between atoms are stronger) Boiling point increases
What are some properties of transition metals?
Shiny when freshly cut Good conductors of electricity Strong Malleable
Describe the transition metals in comparison to group 1
More dense More stronger /harder Higher melting points Also less reactive
What are some chemical properties of transition metals?
💚Less reactive than group 1 💚Produce coloured ionic compounds 💚Can have multiple charges 💚Good catalyst 💚 resistant to corrosion (not so reactive)
What is the reactivity series?
Potassium Sodium Calcium Magnesium Aluminium Zinc Iron Tin Lead
What does the rate of reaction tell you?
The order of reactivity More reactive = greater rate of hydrogen production
Do group 0 react?
NOPE Full outer shell and so won’t easily give up or gain electrons
Which are least reactive out of group 1, group 2 and transition metals
Transition metals
How do you test for oxygen?
Place a glowing splint near the mouth of the container of gas If oxygen is present the splint should relight
How do you test for hydrogen?
Place a lighted splint near the mouth of the container. If hydrogen is present it should ignite with a squeaky pop