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

United States

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7th Sci: Acid-Base Yes/No Challenge


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

7th Sci: Acid-Base Yes/No Challenge

Oui ou Non

À propos de cette activité

Créé par

Téléchargez la version pour jouer sur papier

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7th Sci: Acid-Base Yes/No ChallengeVersion en ligne

par Aashvi Gupta

Curd is acidic because of lactic acid.

Acid rain improves soil fertility.

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

Neutralisation is a physical change.

Antacids contain mild bases.

Hydrochloric acid helps digest food in our stomach.

Orange juice is basic.

Soap solution feels slippery because it is basic.

During neutralisation, heat is usually produced.

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

During neutralisation, heat is usually produced.

Every liquid changes the colour of at least one indicator.

Toothpaste is generally basic in nature.

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

Universal indicator can show different colours for different pH values.

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

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

Baking soda solution is acidic.

A basic solution can turn red litmus blue.

A bee sting is acidic.

Vinegar can help relieve a bee sting.

All colourless liquids are neutral.

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

Red litmus turns blue in every liquid.

Pure water is acidic.

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

If phenolphthalein turns pink, the solution is basic.

All salts formed by neutralisation are table salt.

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

Lime is added to acidic soil to improve crop growth.

Distilled water changes the colour of blue litmus paper.

Lime is added to acidic soil to improve crop growth.

Soap solution turns blue litmus red.

Factory waste is often neutralised before being released into rivers.

A base can neutralise an acid.

Turmeric changes colour in acidic solutions.

Blue litmus can identify bases better than acids.

Acids and bases react to form salt and water.

China rose indicator becomes green in basic solutions.

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

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

Milk is slightly acidic.

Factory waste is often neutralised before being released into rivers.

A neutral solution has neither acidic nor basic properties.

A neutral solution always has a pH of 5.

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

Every sour-tasting substance is an acid.

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

Universal indicator can show different colours for different pH values.

Litmus is obtained from lichens.