7th Sci: Acid-Base Yes/No Challenge

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Advanced Yes/No on acids, bases and pH

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Aashvi Gupta

Estados Unidos

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7th Sci: Acid-Base Yes/No Challenge


7th Sci: Acid-Base Yes/No ChallengeVersión en línea Advanced Yes/No on acids, bases and pH por Aashvi Gupta 1 A solution with pH 2 is more acidic than one with pH 5. Yes No 2 Turmeric changes colour in acidic solutions. Yes No 3 Every liquid changes the colour of at least one indicator. Yes No 4 Toothpaste is generally basic in nature. Yes No 5 If both red and blue litmus show no colour change, the liquid may be neutral. Yes No 6 Universal indicator can show different colours for different pH values. Yes No 7 An indicator helps identify whether a solution is acidic, basic, or neutral. Yes No 8 Orange juice is basic. Yes No 9 During neutralisation, heat is usually produced. Yes No 10 Universal indicator can show different colours for different pH values. Yes No 11 Lime is added to acidic soil to improve crop growth. Yes No 12 Distilled water changes the colour of blue litmus paper. Yes No 13 If turmeric paper turns reddish-brown, the solution could be an acid. Yes No 14 A bee sting is acidic. Yes No 15 During neutralisation, heat is usually produced. Yes No 16 Adding vinegar to acidic soil makes it more suitable for farming. Yes No 17 Soap solution turns blue litmus red. Yes No 18 Acid rain improves soil fertility. Yes No 19 A solution that turns blue litmus red can never be basic. Yes No 20 All salts formed by neutralisation are table salt. Yes No 21 Baking soda solution is acidic. Yes No 22 A base can neutralise an acid. Yes No 23 Vinegar can help relieve a bee sting. Yes No 24 If both red and blue litmus show no colour change, the liquid may be neutral. Yes No 25 Pure water is acidic. Yes No 26 Antacids contain mild bases. Yes No 27 A neutral solution always has a pH of 5. Yes No 28 Soap solution feels slippery because it is basic. Yes No 29 A solution turning blue litmus red is likely to contain more H+ ions than OH- ions. Yes No 30 Acids and bases react to form salt and water. Yes No 31 A neutral solution has neither acidic nor basic properties. Yes No 32 Every sour-tasting substance is an acid. Yes No 33 If phenolphthalein turns pink, the solution is basic. Yes No 34 Lime is added to acidic soil to improve crop growth. Yes No 35 A student adds excess base after neutralisation. The final solution may become basic. Yes No 36 A basic solution can turn red litmus blue. Yes No 37 Acid + Base -> Salt + Water represents a neutralisation reaction. Yes No 38 Factory waste is often neutralised before being released into rivers. Yes No 39 A solution turning blue litmus red is likely to contain more H+ ions than OH- ions. Yes No 40 Hydrochloric acid helps digest food in our stomach. Yes No 41 Curd is acidic because of lactic acid. Yes No 42 Mixing equal amounts of any acid and any base always gives a neutral solution. Yes No 43 All colourless liquids are neutral. Yes No 44 Neutralisation is a physical change. Yes No 45 Litmus is obtained from lichens. Yes No 46 Factory waste is often neutralised before being released into rivers. Yes No 47 Milk is slightly acidic. Yes No 48 China rose indicator becomes green in basic solutions. Yes No 49 Blue litmus can identify bases better than acids. Yes No 50 Red litmus turns blue in every liquid. Yes No

7th Sci: Acid-Base Yes/No Challenge

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7th Sci: Acid-Base Yes/No ChallengeVersión en línea

por Aashvi Gupta

A solution with pH 2 is more acidic than one with pH 5.

Turmeric changes colour in acidic solutions.

Every liquid changes the colour of at least one indicator.

Toothpaste is generally basic in nature.

If both red and blue litmus show no colour change, the liquid may be neutral.

Universal indicator can show different colours for different pH values.

An indicator helps identify whether a solution is acidic, basic, or neutral.

Orange juice is basic.

During neutralisation, heat is usually produced.

Universal indicator can show different colours for different pH values.

Lime is added to acidic soil to improve crop growth.

Distilled water changes the colour of blue litmus paper.

If turmeric paper turns reddish-brown, the solution could be an acid.

A bee sting is acidic.

During neutralisation, heat is usually produced.

Adding vinegar to acidic soil makes it more suitable for farming.

Soap solution turns blue litmus red.

Acid rain improves soil fertility.

A solution that turns blue litmus red can never be basic.

All salts formed by neutralisation are table salt.

Baking soda solution is acidic.

A base can neutralise an acid.

Vinegar can help relieve a bee sting.

If both red and blue litmus show no colour change, the liquid may be neutral.

Pure water is acidic.

Antacids contain mild bases.

A neutral solution always has a pH of 5.

Soap solution feels slippery because it is basic.

A solution turning blue litmus red is likely to contain more H+ ions than OH- ions.

Acids and bases react to form salt and water.

A neutral solution has neither acidic nor basic properties.

Every sour-tasting substance is an acid.

If phenolphthalein turns pink, the solution is basic.

Lime is added to acidic soil to improve crop growth.

A student adds excess base after neutralisation. The final solution may become basic.

A basic solution can turn red litmus blue.

Acid + Base -> Salt + Water represents a neutralisation reaction.

Factory waste is often neutralised before being released into rivers.

A solution turning blue litmus red is likely to contain more H+ ions than OH- ions.

Hydrochloric acid helps digest food in our stomach.

Curd is acidic because of lactic acid.

Mixing equal amounts of any acid and any base always gives a neutral solution.

All colourless liquids are neutral.

Neutralisation is a physical change.

Litmus is obtained from lichens.

Factory waste is often neutralised before being released into rivers.

Milk is slightly acidic.

China rose indicator becomes green in basic solutions.

Blue litmus can identify bases better than acids.

Red litmus turns blue in every liquid.