Chemical Formulae And Equations
Akopọ
Chemistry has its own shorthand. Instead of writing 'two hydrogen atoms bond with one oxygen atom to make water', chemists write H₂O. Instead of describing a reaction in a paragraph, they write a balanced equation that shows exactly what reacts and what is produced.
In this lesson you will learn how to write word equations and balanced symbol equations with state symbols, and how to calculate relative formula masses from relative atomic masses. These skills underpin almost every calculation you will meet in chemistry.
Awọn Afojusun
- Write word equations and balanced chemical equations (including state symbols) for reactions studied in this specification and for unfamiliar reactions where suitable information is provided
- Calculate relative formula masses (including relative molecular masses) (Mr) from relative atomic masses (Ar)
Akọ̀wé Ẹ̀kọ́
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Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Chemical Formulae And Equations. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- What does the state symbol (aq) represent? A) Solid B) Liquid C) Gas D) Dissolved in water Answer: D
- When balancing a chemical equation, you should adjust: A) The subscripts in formulae B) The coefficients in front of formulae C) The symbols of the elements D) The state symbols Answer: B
- What is the relative formula mass of CO2? (Ar: C = 12, O = 16) A) 28 B) 32 C) 44 D) 48 Answer: C
- In the equation 2H2 + O2 -> 2H2O, how many oxygen atoms are on the left side? A) 1 B) 2 C) 3 D) 4 Answer: B
- Which of these is a correctly balanced equation? A) H2 + O2 -> H2O B) 2H2 + O2 -> 2H2O C) H2 + O2 -> 2H2O D) 2H2 + 2O2 -> 2H2O Answer: B
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
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Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Chemical Formulae And Equations? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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