how much prelim chemistry is integral to hsc chem? (1 Viewer)

[bleakarcher]

my teacher is going pretty damn slow and so im getting worried. we have been switching topics from one lesson to another so I know some stuff from all the topics. but we are only just formally beginning the topic metals. should i be worried?

 

[nightweaver066]

So you've only gone through The Chemical Earth so far?

If so, i would be worried as your preliminary finals are the end of next term.

Basically what you need to gather/recall from year 11 is IMF (hydrogen, dipole-dipole & dispersion), the mole concept (very important), molar heat of combustion, REDOX and knowing how to write chemical equations. If anyone thinks i've missed anything important, please do mention it.

 

[twinklegal19]

digged this up from HSNT

0 generally. I had an ongoing issue with not doing my HW, because honestly, it was not the way I learnt. I liked to read (not study, just read) chemistry books and articles that interested me. On the days before exams or at the end of topics, it took me about 5-10 hours to do the notes for that topic (I used aquawhites, and then expanded on them).

My notes are pretty long (10k words per topic), but I believe a thorough understanding is essential to do well in chem. Also, strong knowledge of basics, and out of syllabus work can strengthen this. I would suggest knowing these concepts well:

Electronegativity in terms of bond types and polarity (learn this even if its not in syllabus, it's easy to learn and is very very useful)
Molecular structure (you do this in year 12 as well, but honestly, just learn the basics of it now, it's so simple, and will help a lot)
Types of bonds, inter and intra molecular. So covalent, co ord covalent and ionic as well as dispersion, dipole dipole and hydrogen bonding (all are explained by electronegativity)
Exo and Endo thermic reactions
Dissolving in solutes and why it occurs.

If you have these core concepts down, honestly, you'll gun chem.

 

[such_such]

I've heard the last module - energy is the most important for the HSC

 

[madharris]

Last module of prelims tie onto first module of hsc chemistry (production of materials) but don't worry, it's the easiest topic We skipped over half of the last module in prelims and went straight onto h&c in term 4. Don't worry, all it is is naming alkenes and alkanes which you revise in the chemistry topic.

You will need to know a few things from prelim in the HSC course, however the majority is not needed, if you do need it then it will be retaught to you

 

[bleakarcher]

So you've only gone through The Chemical Earth so far?

If so, i would be worried as your preliminary finals are the end of next term.

Basically what you need to gather/recall from year 11 is IMF (hydrogen, dipole-dipole & dispersion), the mole concept (very important), molar heat of combustion, REDOX and knowing how to write chemical equations. If anyone thinks i've missed anything important, please do mention it.

I know all that except molar heat of combustion. We haven't been sticking to any particular topic, it's been more going from one topic to another and yeh pretty crazy shiet.

 

[theind1996]

I've heard the last module - energy is the most important for the HSC

lolwut, i've heard the exact opposite.

 

[theind1996]

my teacher is going pretty damn slow and so im getting worried. we have been switching topics from one lesson to another so I know some stuff from all the topics. but we are only just formally beginning the topic metals. should i be worried?

Yes, my school is on Section 3 of Water. If you're starting Metals now, you're screwed. But only specific things are important to carry onto Year 12:

WHAT A FRIEND TOLD ME:

8.2 THE CHEMICAL EARTH
Basics & Specifics:
EVERYTHING. You must know this topic from top to bottom. This is your bread and butter chemistry for year 12. If there is anything you don't know from this topic, you'd better go and learn it, or you won't survive in year 12. (All topics)

8.3 METALS
Basics:
- Mole ratios. If you can't get your mole calculations right, you can also forget about doing chemistry. (All topics)

Specifics:
- Make sure you know your metal-acid reactions. (The Acidic Environment)
- Know the reactivity series for metals and the various properties that go along with it. This is very useful in year 12. (Production of Materials, The Acidic Environment, Industrial Chemistry)
- Knowing the trends along the Periodic Table isn't necessary but it's very, VERY useful. Did I mention its useful? (All Topics)

8.4 WATER
Basics:
- Make sure you are comfortable with the concept of Hydrogen bonding and dipole-dipole interactions. (The Acidic Environment)
- Remember the rule 'like dissolves like'- ie. ionic compounds dissolve well in ionic compounds, non-polar compounds dissolve well in non-polar substances, etc. (The Acidic Environment, Chemical Monitoring & Management)
- Memorise the formula dH = -mCdT [an easy way to remember it is 'H = mCat'] for calculating the enthalpy (heat) change of a solution. (Production of Materials)
- Make sure you are comfortable with the concept of exothermic and endothermic reactions. (All topics)

Specifics:
- Make sure you know how water will react with other particles, eg. ionic compounds, covalent compounds, metals, etc.
- Understand the concept of a 'dynamic equilibrium' in a saturated solution. This will be elaborated on greatly in year 12. (The Acidic Environment, Chemical Monitoring & Management, Industrial Chemistry)
- Make sure you know your solubility rules off by heart. This is VERY important. (Chemical Monitoring & Management)

8.5 ENERGY
Basics:
- Know the properties of Carbon. Carbon is one of those things that makes regular appearances in the Year 12 course. (Production of Materials, Chemical Monitoring & Management).

Specifics:
- Make sure are VERY comfortable with using IUPAC nomenclature (proper chemical naming) to describe hydrocarbons- eg. 1,2 dimethylpentane, 3,3,4 trimethyl hexane, etc. This stuff only gets more complicated in Year 12. (Production of Materials; Chemical Monitoring & Management)
- Know your combustion. It's VERY useful. (Production of Materials)
- Make sure you are comfortable with your catalysts, activation energy, reaction rates and conditions, etc. This stuff makes up the bulk of the Year 12 course- every single topic goes into this in a LOT of detail. (All topics)

 

[theind1996]

I know all that except molar heat of combustion. We haven't been sticking to any particular topic, it's been more going from one topic to another and yeh pretty crazy shiet.

isn't that PoM? or is it energy?

 

[bleakarcher]

I think he is talking about this equation I've merely glimpsed upon lol. It goes something like:

delta(H)=-mC*delta(T)

 

[bleakarcher]

Didn't read your question properly lol, I think its energy.

 

[theind1996]

I think he is talking about this equation I've merely glimpsed upon lol. It goes something like:

delta(H)=-mC*delta(T)

yep.

 

[bleakarcher]

Yes, my school is on Section 3 of Water. If you're starting Metals now, you're screwed. But only specific things are important to carry onto Year 12:

WHAT A FRIEND TOLD ME:

8.2 THE CHEMICAL EARTH
Basics & Specifics:
EVERYTHING. You must know this topic from top to bottom. This is your bread and butter chemistry for year 12. If there is anything you don't know from this topic, you'd better go and learn it, or you won't survive in year 12. (All topics)

8.3 METALS
Basics:
- Mole ratios. If you can't get your mole calculations right, you can also forget about doing chemistry. (All topics)

Specifics:
- Make sure you know your metal-acid reactions. (The Acidic Environment)
- Know the reactivity series for metals and the various properties that go along with it. This is very useful in year 12. (Production of Materials, The Acidic Environment, Industrial Chemistry)
- Knowing the trends along the Periodic Table isn't necessary but it's very, VERY useful. Did I mention its useful? (All Topics)

8.4 WATER
Basics:
- Make sure you are comfortable with the concept of Hydrogen bonding and dipole-dipole interactions. (The Acidic Environment)
- Remember the rule 'like dissolves like'- ie. ionic compounds dissolve well in ionic compounds, non-polar compounds dissolve well in non-polar substances, etc. (The Acidic Environment, Chemical Monitoring & Management)
- Memorise the formula dH = -mCdT [an easy way to remember it is 'H = mCat'] for calculating the enthalpy (heat) change of a solution. (Production of Materials)
- Make sure you are comfortable with the concept of exothermic and endothermic reactions. (All topics)

Specifics:
- Make sure you know how water will react with other particles, eg. ionic compounds, covalent compounds, metals, etc.
- Understand the concept of a 'dynamic equilibrium' in a saturated solution. This will be elaborated on greatly in year 12. (The Acidic Environment, Chemical Monitoring & Management, Industrial Chemistry)
- Make sure you know your solubility rules off by heart. This is VERY important. (Chemical Monitoring & Management)

8.5 ENERGY
Basics:
- Know the properties of Carbon. Carbon is one of those things that makes regular appearances in the Year 12 course. (Production of Materials, Chemical Monitoring & Management).

Specifics:
- Make sure are VERY comfortable with using IUPAC nomenclature (proper chemical naming) to describe hydrocarbons- eg. 1,2 dimethylpentane, 3,3,4 trimethyl hexane, etc. This stuff only gets more complicated in Year 12. (Production of Materials; Chemical Monitoring & Management)
- Know your combustion. It's VERY useful. (Production of Materials)
- Make sure you are comfortable with your catalysts, activation energy, reaction rates and conditions, etc. This stuff makes up the bulk of the Year 12 course- every single topic goes into this in a LOT of detail. (All topics)

You are a bloody legend for this mate. Thanks.

 

[theind1996]

You are a bloody legend for this mate. Thanks.

No worries

 

[barbernator]

bleak, if you're anywhere near as close to as good at chem as you are at maths, you are all good mate don't stress.

 

[theind1996]

bleak, if you're anywhere near as close to as good at chem as you are at maths, you are all good mate don't stress.

+1

 

[RealiseNothing]

I think he is talking about this equation I've merely glimpsed upon lol. It goes something like:

delta(H)=-mC*delta(T)

That's in water.

 

[bleakarcher]

bleak, if you're anywhere near as close to as good at chem as you are at maths, you are all good mate don't stress.

Thank you barbenator, appreciate that comment bro

 

[bleakarcher]

That's in water.

yeh just read theind's post.

 

[LoveHateSchool]

If it's any consolation we did not finish the Prelim course, got a new teacher for HSC and recalled very little on the prelim course for the HSC.

Know your equations, naming etc.