🚨LAST MINUTE! SOLE - POWTÓRZENIE + ZADANIA 🔥 | Nowa Era, klasa 8

Hi! In this episode, review before the salt test. Adapted to the new core curriculum! [1/p.96/NE8] Write the names of salts with the given molecular formulas and the molecular formulas of salts with the given names. Cu3(PO4)2, FeBr3, MgSO4, ZnCl2 silver(I) sulfide, iron(II) carbonate, potassium nitrate, iron(III) phosphate [2/p.96/NE8] Complete the following sentence to create the correct information. Choose one term from those given in each parentheses. Electrolytic dissociation of salts involves the disintegration of salt crystals into cations (metals / acidic residues) and anions (metals / acidic residues) under the influence of water molecules. Salts that are (highly / sparingly) soluble in water undergo dissociation. [3/p.96/NE8] Complete and balance the equations for the electrolytic dissociation of salts. a) Fe(NO3)3 → ... b) ... → 3 Na+ + PO43- [4/p.96/NE8] Write the chemical equations for the preparation of salts with the given names by neutralization. Use the molecular, ionic, and shortened ionic notations. a) calcium chloride b) potassium sulfate [5/p.96/NE8] A chemical experiment was conducted in which a solution of a certain salt was added to a solution of a base containing phenolphthalein until the indicator discolored. Complete the sentence. Choose answer A or B and justify your answer. 1. or 2. The substances used in the chemistry experiment could have been: A. KOH and H2SO4, B. NaOH and H2O, because: 1. The discoloration of phenolphthalein indicates that the base was neutralized by the addition of acid. 2. An acid was formed in which phenolphthalein is colorless. [6/p.96/NE8] The chemical experiment shown in the diagram was performed. Provide the numbers of the test tubes in which the chemical reactions occurred. Justify your answer. Write the appropriate equations for the chemical reactions. [7/p.96/NE8] The following chemical experiments were performed: an aqueous solution of magnesium chloride was poured into test tubes 1 and 2, followed by the addition of aqueous salt solutions, potassium carbonate into test tube 1, and potassium sulfide into test tube 2. A precipitate was observed to form. Complete the following sentence to create the correct information. Choose one test tube number from those given in parentheses. Write the appropriate chemical equations using molecular, ionic, and shortened ionic notations. The precipitate formed in test tube (1. / 2.). [8/p.96/NE8] Humans can detect the salty taste of table salt in its aqueous solution at a concentration of just 0.5 g per liter of water. Calculate the mass of sodium chloride (NaCl) in units that must be present in a glass containing 250 ml of water for the salty taste to be detected. Record your calculations. 🎓 Tutoring Offer: Want to expand your knowledge of chemistry, mathematics, or other subjects? I offer flexible online tutoring tailored to your individual needs! Regardless of your level – from elementary to high school, from basic to advanced – we will achieve success together! 📞 Contact me: I'm happy to answer your questions and help you choose the best way to learn: 📧 Email: [email protected] 💬 Discord: luz_chemia 🌐 Discord server:   / discord   🌐 Our socials: 🔬 TikTok:   / luzchemia   📸 Instagram:   / luz_chemia   💬 Discord:   / discord   🙏 Channel Support: If you enjoy learning and would like to support my work, you can do so at:    / @luzchemia  . Your support helps me create even better educational content and expand the range of materials available on the channel. I also encourage you to share your thoughts in the comments below the video – your opinions are valuable to me and help me tailor the content to your needs! Together, we create lighthearted and informative chemical adventures! 🔬🧪📐 for reading the description! Source: New Era, Chemistry of the New Era. Jan Kulawik, Teresa Kulawik, Maria Litwin Use in accordance with Article 29 of the Quotation Law. 0:30 Task 1 4:22 Task 2 5:28 Task 3 8:09 Task 4 13:30 Task 5 14:23 Task 6 16:18 Task 7 18:41 Task 8