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.
- Q Zoom Where is most of the mass of an atom located? In the nucleus It has no mass In electron shells In the empty space I don't know
- Controlled explosions take place inside the chamber as gasoline reacts with oxygen. The car's engine transforms chemical potential energy into kinetic energy, or energy of motion. Which of the following statements is true about the chemical reaction? This is an exothermic reaction because energy is absorbed b. This is an endothermic reaction because energy is absorbed This is an endothermic reaction because energy is released This is an exothermic reaction because energy is released
- Periodic Table 1. The periodic table is set up in order of increasing atomic . 2. Columns are referred to as __ and rows are referred to as __ There are __ groups and __ periods on the periodic table. The table containing the elements is termed a periodic table because there is a __ pattern that occurs.
- 15. Motching __ 1. metals __ ii. noble gases __ iii. periods __ iv. valence __ v. non-metals __ vi. metalloids __ vũ. groups __ viii. atomic number __ ix. alkali metals __ x. halogens a. families or vertical columns of elements b. lose electrons; good conductors of heat and electricity c. outermost electrons that can be lost or gained d. number of protons in the atoms of elements e. properties of both metals and non-metals f. inert; un-reactive complete number of valence electrons g. gain electrons; usually solids or gases h. horizontal rows of elements; same number of energy level i. most reactive non-metals family 17 j. most reactive metals;family 1
- 11. Which of these elements are unreactive and will not form compounds? (Choose as many as it applies) a. neon b. iron c. nitrogen d. helium e. calcium f. barium g. krypton h. boron