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Step 1. Identify the number of functional groups and their order of precedence. You have a primary hydroxyl group and a ketone group. The ketone has highest precedence, so the ending must be -one. Step 2. Count the carbons, there are five. Start numbering from the carbon nearest to the highest...

"Creative" usually means something that hasn't been done before. If you are doing your HSC in 2025 then you are doing the Preliminary Chemistry course, am I correct? Without knowing what your depth study is about, I can only make very general comments. You could construct a physical model. You...

Your question about what determines the colour of a solution needs to be unpacked a bit more. Later on in your Chemistry course you will study Colorimetry as an analytical technique. I will discuss a solution containing a mixture of two coloured species. Colour is not a simple concept (as any...

The six parallel arrows represent the B-field vector. The loop A-B-C-D is a conductor therefore the current vector is along the conductor. The last fact you need is the polarity of the battery. The long bar is positive, the short bar is negative. Now can you work it out?

This is my personal opinion, I find Dot Point Physics to be unnecessarily long. For goodness sake it's 400 pages long. You don't need to complete every exercise in the book to master Physics. Most of the exercises are short answer, recall or straight calculation. There are very few really tough...

A good way to illustrate your question is to use the example of the dissociation of a weak acid in aqueous solution. We commonly refer to acids as weak because the percentage of dissociation is low in aqueous solution. The percent dissociation is a good measure of the position of equilibrium...

Thanks to @Eagle Mum for that extract from the Year 11 modules. Of course predicting what topics are going to be examined in the HSC is a thankless task, and entirely subjective, but my comments are based on the past history of HSC Chemistry papers. I have not seen a question that specifically...

You might get some inspiration from my HSC Physics Videos on YouTube, see

I think you are confusing a uniform electric field strength with equipotential. You should try to draw a diagram to explain your thoughts. If a space contains a uniform electric field (as in your case of the parallel charged plates) then there is a uniform potential gradient from one plate to...

Gravimetric analysis - YES Isotopes - not specifically but it comes up during Module 8 Nuclear Magnetic Resonance Spectroscopy Homogeneous and heterogeneous substances - NO SPDF notation - NO Schrodinger's model - NO Emission spectroscopy - YES Allotropy and metallic bonding - NO Bonding...

They are all good. Diethyl ether CH3-CH2-O-CH2-CH3 and methyl propyl ether CH3-O-CH2-CH2-CH3 are also structural isomers of n-butanol

Yeah, I agree these sorts of questions are a bit daunting. You won't be asked about really large molecules with dozens of potential structural isomers, but in the example you gave C4H8 it is pretty obvious that it is not a straight-chain alkane but it might be straight-chain alkene. Then go...

I'm a TAS teacher.

Yeah, I understand your confusion about this topic. Your question has been answered before; go to this thread: Equilibrium Constant and Temperature

OK. However this is really the job of your classroom teacher.

@Bendwhat?_over If you are not familiar with the ES syllabus, then you should download it from the NSW Education website. It's free. Engineering Studies has four focus areas: Scope of the Engineering Profession, Engineering Communication, History of Technology and Materials Science. In the...

@v.tex Yes, your answer is right. range sx = 2v2 cosθ sinθ /g

Without seeing your extended response answers all I can offer is a generic scaffold: (1) Use the blank lines provided to measure the length of your answer. (2) Answer all parts of the question. (3) Know the syllabus front-to-back and identify the syllabus points that are being examined in the...

pm to me, I may be able to help

You have two types of motion - translational motion and rotational motion. Force vectors cause translational motion, and torques (or turning moments) cause rotational motion. Torque links to angular acceleration and to angular velocity so of course there is also angular momentum. Yes, or course...