SKU: 66381931219

2025 Trial HSC Science Extension paper

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Description

2025 Trial HSC Science Extension paperFor the HSC Science Extension course, this exam is written by experienced HSC markers and teachers. This paper has been designed to give students an authentic examination experience. Answers are provided, including sample responses. It provides excellent preparation for the HSC Science Extension exam and assessment tasks. Two versions of the paper are available: Word and PDF. The Word version is designed for schools, tutors and teachers as it is

For the HSC Science Extension course, this exam is written by experienced HSC markers and teachers. This paper has been designed to give students an authentic examination experience. Answers are provided, including  sample responses. It provides excellent preparation for the HSC Science Extension exam and assessment tasks.

Two versions of the paper are available: Word and PDF. The Word version is designed for schools, tutors and teachers as it is copyrighted for use with multiple students. It can be printed and easily adapted. The cheaper PDF version MUST NOT be purchased for any type of instruction by any type of educator including, but not limited to, teachers, schools and tutors. PDFs are cheaper and the full writer royalty has been generously relinquished by writers as we support student initiated revision. They are ONLY for ONE student's personal use. PDFs are screen versions only and cannot be printed or edited. It is illegal for any type of educator to buy a PDF and it will not be supported by TEC.

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SKU: 66381931219

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4.8 ★★★★★
Based on 26 reviews
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A
Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 5
Worked great, saved me hundreds.
Size: 8 Fl Oz (Pack of 1)
I've had issues with the carburetor on my 2003 Honda ATV for years. It has needed cleaned regularly to stay running, and one repair shop wanted over $400 to replace the carburetor. One treatment with STA-BIL and it's running smooth again. Very impressive.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
C
Verified Purchase
Chris Wildy
Cuba, US
★★★★★ 4
Great for 2 cycle, meh for 4 cycle.
Size: 8 Fl Oz (Pack of 1)
This stuff is flat out amazing for 2 cycle small engines, works like advertised. 4 cycle isn't as good, if your engine hasn't ran in years, you'll still have to clean the carb, but it does help some. The 2 cycle oil for one is a lubricant and inhibits varnish buildup (especially a synthetic premium brand), and usually premium oil has a fuel stabilizer in it. Plus if you don't have a float bowl, there's not enough fuel for phase separation. I also use it in my mix for my ultrasonic cleaner when cleaning carbs. Overall a very good product, but understand it's limitations in this modern age of ethanal fuel.
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Reviewed in the United States on April 12, 2026
G
Verified Purchase
G123
Lake Worth, US
★★★★★ 5
It works well.
Size: 8 Fl Oz (Pack of 1)
Great product that delivers on what it says it does. This won’t fix a mechanical problem or damaged component, but it will fix a stuck float, varnished tank, gummed up jet, or partially blocked emulsion tube.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
R
Verified Purchase
R Duke, Texas
Port Orchard, US
★★★★★ 5
It Works
Size: 8 Fl Oz (Pack of 2)
This stuff works. I added it to my four 5 gallon gas cans before filling them up. I’ve used 10 gallons of gas in my lawn tractor so far and can tell it likes it. I do annual maintenance before summer and check or change the spark plug so it performs the best it can. I have 508 hours on it and with this it seems like it idols smoother, which indicates it has helped in the carburetor since I haven’t had to remove it and clean it. Works great.
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Reviewed in the United States on April 30, 2026
D
Verified Purchase
Dennis
Waukegan, US
★★★★★ 5
Great product
Size: 4 Fl Oz (Pack of 1)
Used this stabil in my rider after first start of the season. Machine running rough and uneven. Drained old fuel and added it. Within 15 minutes at full throttle it began to run normal. No back fires and engine back to normal. There will always be a bottle of this in my garage.
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Reviewed in the United States on May 13, 2026

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