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1 Acids & Bases Game Guide playmadagames.com 2017 PlayMada Games LLC. All rights reserved.
2 Acids & Bases Snapshot Challenges The ChallengeLevels increase in rigor and complexity. The first 2 levels are tutorial levels. 10 core levels 3 connected levels to Covalent Bonding Sandbox* The Sandbox is an exploratory learning space for extended practice and review of acids & bases. 14 Achievements * Players must complete Challenge Levels 1-2 before unlocking the Sandbox. Integrated Chemistry Concepts Brønsted-Lowry acids and bases Strong vs. weak acids Neutralization reactions Amphoteric substances General Information Sample Acid Skills Partial negative charge Partial positive charge Red glow = electronegativity Sample Base Red charge ring = positively charged ion Blue charge ring = negatively charged ion 2
3 Acids & Bases: Overview Acids & Bases Sandbox Menu + Help Achievements Bank of acids and bases Pull Energy meter Proton donor workspace Proton acceptor workspace Moves workspace items into the complete area Complete area Removes items from the complete area Achievements Selected Bank of Acids & Bases HI HBr HCl HF H 2 CO 3 H 2 SO 4 H 2 S HCN HNO 3 NaOH NH 3 LiOH KOH Mg(OH) 2 H 2 O 3
4 Acids & Bases: Overview (cont.) Acids & Bases Challenges LEVELS 1-10 GOAL : Remove or add protons to the acids and bases in the bank in order to match the targets. Limited bank of acids and bases Pull Energy meter Segment map Segment reset Level targets COVALENT BONDING to ACIDS & BASES CONNECTED LEVELS GOAL: Some molecules are missing from the bank. Use the button on the left to go to Covalent Bonding. Solve the challenge to bring back the missing molecules! 4
5 Acids & Bases: Chemistry Connections CHEMISTRY CONCEPT: An acid can donate a proton to another substance. (Brønsted-Lowry) HCI H + + CI - A conjugate base is formed after an acid donates a proton. CHEMISTRY CONCEPT: A base can accept a proton from another substance. (Brønsted-Lowry) NaOH + H + H 2 O + Na + A conjugate acid is formed after a base accepts a proton. CHEMISTRY CONCEPT: Acid strength correlates to the ease in which a molecule can donate a proton. The Pull Energy Meter represents the ease in which various acids are able to donate protons. Requires more Pull Energy Requires less Pull Energy Weak Acids Strong Acids The harder it is to remove a proton from an acid, the weaker the acid. The easier it is to remove a proton from an acid, the stronger the acid. H 2 O is a weak acid. HI is a strong acid. 5
6 Acids & Bases: Chemistry Connections (cont.) CHEMISTRY CONCEPT: Acid strength increases as atomic radius increases. Increasing Acid Strength CHEMISTRY CONCEPT: The amount of ionization differs between strong and weak acids. A strong acid completely ionizes in water. HI is a strong acid. A weak acid partially ionizes in water. HF is a weak acid. 6
7 Acids & Bases: Chemistry Connections (cont.) CHEMISTRY CONCEPT: A polyprotic acid can donate more than one proton to another substance. A polyprotic acid donates its 1 st proton more easily than its 2 nd proton. CHEMISTRY CONCEPT: In a neutralization reaction, an acid and a base react to form water and an ionic salt. HCI + NaOH H 2 O + Na + (aq) + CI - (aq) 7
8 Acids & Bases: Chemistry Connections (cont.) CHEMISTRY CONCEPT: A substance that can act either as an acid or a base is amphoteric. H 2 O is an amphoteric substance. H 2 O can behave as an acid. H 2 O can behave as a base. 8
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