4 signs of a chemical change

In uranium fission reaction, uranium splits into two smaller atoms and energy. where did the energy come from?

Nonrenewable resources include which of the following? coal, oil, and solar hydroelectric, oil, and natural gas natural gas, coal, and oil coal, nuclear, and wind

In poor quality fireworks what will you notice and why

You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. The only problem is that you do not know what element will form. By your previous calculations you know that you will have 6.

What chemical property causes rust to form on a nail?

Which of the following polyatomic ions will form an ionic compound with two sodium ions? CO32- HCO31- NO21- NO31-

What is hybridisation

2. Seorang ibu perlu menyediakan satu hidangan kari daging dengan cepat untuk anaknya yang lapar. Langkah manakah yang berikut dapat membantu dia mencapai tujuan ini? (CL01, C2) A. Menggunakan periuk yang lebih besar B. Menambah banyak serbuk kari C.

Which of the following statements is not true? Question 4 options: When atoms have similar electronegativities, electrons are shared equally When electrons are shared equally, the molecule is called a nonpolar molecule.

Write the isotope symbol for two isotopes of the same element. What makes the isotopes different? How are they similar?