Year 11 ACT Chemistry sample questions

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Year 11 ACT Chemistry practice questions

Use this no-login public demo to preview Skill Align's Year 11 ACT Chemistry sample questions, explanations, exercise mode, and test mode before regular practice.

Sample-question focus

Try a short public sample of Year 11 ACT Chemistry questions selected from the reviewed Skill Align demo set.

Skills covered

Practice atomic structure, bonding, chemical reactions, stoichiometry, equilibrium, acids and bases, organic chemistry, analysis, and modelling.

Exercise and test mode

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Curriculum link

Compare this demo with the ACT Year 11-12 Chemistry curriculum page to scan related topics, subtopics, and pathway coverage.

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Sample ACT BSSS Year 11 Chemistry questions

These sample questions are visible on the page before login. They show ACT BSSS Year 11 Chemistry particle models, bonding, stoichiometry, reaction profiles, rates, and acid-base data with diagrams, tables, curves, and spectra before opening the demo.

ACT BSSS Year 11 Chemistry Conservation of mass hard particle model

1. A sealed-flask particle model shows vinegar and bicarbonate reacting. Why does the total mass stay the same in the sealed flask?

Choices

No atoms leave the system.
Gas has no mass.
Atoms are created by fizzing.
The balance ignores products.

Explanation:

In a sealed system, atoms are rearranged but remain inside the flask.

ACT BSSS Year 11 Chemistry Amounts hard stoichiometry table

2. A stoichiometry table uses molar mass 44.0 g mol^-1 for carbon dioxide. How many moles are in 8.80 g CO2?

Choices

0.200 mol
5.00 mol
35.2 mol
44.0 mol

Explanation:

n = m / M = 8.80 / 44.0 = 0.200 mol.

ACT BSSS Year 11 Chemistry Polarity hard bond-polarity diagram

3. A C=O bond diagram shows the dipole arrow toward oxygen. Which end is partially negative?

Choices

The oxygen end
The carbon end
Both ends are metals
Neither end has electrons

Explanation:

Oxygen is more electronegative than carbon, so electron density is greater near oxygen.

ACT BSSS Year 11 Chemistry Rates hard rate graph

4. A concentration-time graph drops fastest at the start of a reaction and then becomes flatter. What happens to the rate over time?

Choices

It decreases.
It becomes infinite.
It stays zero at first.
It is unrelated to concentration.

Explanation:

As reactants are used up, there are fewer frequent successful collisions, so the gradient becomes less steep.

ACT BSSS Year 11 Chemistry Covalent molecules hard Lewis structure

5. A Lewis diagram for methane shows carbon bonded to four hydrogen atoms. How many single C-H bonds are shown?

Choices

Four
Two
One
Eight double bonds

Explanation:

Methane is CH4, so carbon forms four single covalent bonds to hydrogen.

ACT BSSS Year 11 Chemistry Acid-base scale hard pH scale

6. A water sample is pH 7 on the diagram. Which description best matches pH 7 at 25 C?

Choices

Neutral
Strongly acidic
Strongly basic
A molecular ion

Explanation:

A pH of 7 is neutral for pure water at 25 C.

For parents comparing ACT BSSS Year 11 Chemistry support

ACT BSSS Year 11 Chemistry practice should help students connect chemical reasoning to visible evidence: particle models, bonding, stoichiometry, reaction profiles, rates, and acid-base data. These examples preview that visual reasoning before the no-login Chemistry demo.

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Answer questions in a short test-style session.

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Practice Summary

Year 11 · ACT Chemistry · Test mode · 8 questions · 10 min

Questions attempted 0 / 8

Correct answers Pending

Score -

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ACT Chemistry practice questions FAQ

Does this page include Year 11 ACT Chemistry practice questions?

Yes. This public demo includes reviewed Year 11 ACT Chemistry sample questions so families can preview the Skill Align practice style before regular use.

Can students try the demo without signing up?

Yes. The public demo can be opened without signing up, and the attempt stays in the page instead of being saved to a student record.

How does this demo relate to curriculum coverage?

This demo is linked with the ACT Year 11-12 Chemistry curriculum coverage page, where parents can compare the broader topic and pathway structure used for Skill Align practice.