Acids & Bases: Created by Fereshteh Hossein Nia

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Parties jouées 1 %Précision 100 Temps moyen 02:10

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Test your acid-base knowledge

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Fereshteh Hossein Nia

Hungary

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Acids & Bases: Created by Fereshteh Hossein Nia


Acids & Bases: Created by Fereshteh Hossein NiaVersion en ligne Test your acid-base knowledge par Fereshteh Hossein Nia 1 What is the Arrhenius definition of an acid? a A substance that neutralizes all bases completely b A substance that donates electrons in a reaction c A substance that increases H+ (protons) in solution d A substance that decreases OH- in solution 2 Which pH range describes a basic solution? a Below 7 b 5-6 c 2-4 d Above 7 3 Which substance is a strong acid? a HCl (hydrochloric acid) b CH3COOH (acetic acid) c NH3 (ammonia) d NaOH (sodium hydroxide) 4 What is a Bronsted-Lowry base? a A substance that donates a proton b A substance that donates electrons c A substance that accepts a proton d A substance that absorbs heat 5 Which indicator changes color in basic solutions? a Phenolphthalein b Bromothymol blue c Methyl orange d Universal indicator 6 Which is a strong base? a NH4Cl b H2SO4 c KCN d NaOH (sodium hydroxide) 7 What happens when an acid reacts with a metal? a Water is formed only b Oxygen gas is evolved c The metal dissolves without gas d Hydrogen gas is evolved 8 Which is a Arrhenius acid–base neutralization product? a Salt and water b Hydrogen peroxide c Hydrochloric acid d Ozone 9 What is the pH of a neutral solution at 25°C? a 7 b 14 c -1 d 0 10 Which pair correctly demonstrates a buffer system? a Carbonic acid and bicarbonate in blood b Hydrochloric acid and sodium chloride c Ammonia and ammonium nitrate d Sodium hydroxide and water 11 What does HTML stand for? a Hyperlink Text Markup Language b HyperText Markup Languague c HyperText Markup Language d HyperText Markdown Language 12 Which tag creates a paragraph in HTML? a para b p c div d span 13 Which CSS property changes text color? a color b background c text-align d font-size 14 What does CSS stand for? a Cascading Style Sheets b Computer Style Sheets c Cascading Simple Sheets d Cascading Script Sheets 15 Which HTML element defines the page footer? a section b bottom c footer d aside 16 What is the purpose of the alt attribute in an img tag? a Provide alternative text for accessibility b Set image border c Specify image alignment d Hide image from screen readers 17 Which HTTP method submits form data safely to the server? a GET b PATCH c PUT d POST 18 What does DNS stand for? a Dynamic Name Server b Domain Name System c Domain Numeric System d Domain Network Service 19 Which language is primarily used for client-side scripting in browsers? a Java b C++ c Python d JavaScript 20 What’s the purpose of the meta viewport tag? a Define font scale b Control layout on mobile browsers c Increase page load speed d Set page theme Feedback 1 Acids increase H+ in aqueous solutions per Arrhenius. 2 Bases have pH values greater than 7. 3 HCl is a strong monoprotic acid; it dissociates completely in water. 4 Bronsted-Lowry bases accept protons. 5 Phenolphthalein turns pink in base solutions. 6 NaOH dissociates completely giving OH- ions. 7 Acid + metal typically makes H2 gas and a salt. 8 Neutralization yields a salt and water in many cases. 9 Neutral pH at room temp is 7. 10 Buffers resist pH changes by conjugate acid-base pairs. 11 HTML expands to HyperText Markup Language, the standard for web pages. 12 The paragraph element is the p tag; it defines a paragraph. 13 The color property sets the text color of an element. 14 CSS stands for Cascading Style Sheets, used for styling. 15 The footer element represents the footer for its nearest sectioning content. 16 Alt text describes the image for accessibility and when images can’t load. 17 POST sends data in the request body, suitable for form submissions. 18 DNS translates domain names to IP addresses. 19 JavaScript runs in the browser to create interactive pages. 20 Meta viewport helps ensure responsive layouts on mobile devices.

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Acids & Bases: Created by Fereshteh Hossein Nia

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À propos de cette activité

Créé par

Téléchargez la version pour jouer sur papier

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Acids & Bases: Created by Fereshteh Hossein NiaVersion en ligne

par Fereshteh Hossein Nia

What is the Arrhenius definition of an acid?

Which pH range describes a basic solution?

Which substance is a strong acid?

What is a Bronsted-Lowry base?

Which indicator changes color in basic solutions?

Which is a strong base?

What happens when an acid reacts with a metal?

Which is a Arrhenius acid–base neutralization product?

What is the pH of a neutral solution at 25°C?

Which pair correctly demonstrates a buffer system?

What does HTML stand for?

Which tag creates a paragraph in HTML?

Which CSS property changes text color?

What does CSS stand for?

Which HTML element defines the page footer?

What is the purpose of the alt attribute in an img tag?

Which HTTP method submits form data safely to the server?

What does DNS stand for?

Which language is primarily used for client-side scripting in browsers?

What’s the purpose of the meta viewport tag?

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