Chemistry Homework Assistance
QuestionAI's chemistry problem solver is a middle school chemistry tutoring tool that summarises key chemical reactions and equations in real-time, featuring a robust learning system to empower even those with a weak foundation in chemistry.
You needn't fret over the elemental properties of the periodic table anymore. Here, you can effortlessly access chemical reactions and reaction principles corresponding to each element. Deductive reasoning from microscopic phenomena to discern the original structure of molecules and atoms is a research technique we staunchly champion.
- Physical and Chemical Changes Part A Can you recognize the chemical and physical changes that happen all around us? If you change the way something looks, but haven't made a new substance, a physical change (P) has occurred. If the substance has been changes into another substance, a chemical change (C) has occurred. square square square
- 8. Define the Octet Rule. 9. A __ covalent bond results when electrons are shared equally. A __ covalent bond results when electrons are shared unequally.
- Q6, A student investigated food dyes using paper chromatography, This is the method used 1. Put a spot of food colouring on the start line. Put spots of four separate dyes, A B, C and D on the start line. 2. place the bottom of the paper in water and leave it for start line inutes. Figure 1 shows the apparatus the student used. (a) Write down two mistakes the student made in setting up the experiment and explain what problems one of the mistakes would cause. __ __ Mistake 2 __ __ disappointed
- Which represents a balanced nuclear equation? (}_{11)^23Naarrow _(12)^24Mg+_(1)^1H (}_{11)^24Naarrow _(12)^24Mg+_(-1)^0e (}_{13)^24Alarrow _(12)^24Mg+_(-1)^0e (}_{12)^23Mgarrow _(12)^24Mg+_(0)^1n
- An element has three stable isotopes. One has a mass number of 63 and an abundance of 50% The second has a mass number of 65 and an abundance of 30% The third has a mass number of 67 and an abundance of 20% Calculate the relative atomic mass of this element. Give your answer to one decimal place.