Which element has the same electron configuration as an ion with 8 protons, 10 electrons, 8 neutrons?

What evidence did Alfred Wagner have to support his idea of continental drift

Which two substances can not be broken down by chemical change? (1) C and CuO (3) CO2 and CuO (2) C and Cu (4) CO2 and Cu

Which of the following describes the Bohr atomic model

Which of the following changes are not reversible Select one: a. Dehydration b. Melting c. Decomposition d. Hydration

Eukaryote:mitosis:: prokaryote: a. binary fission b. budding c. both binary fission and budding d. none of the above

Which changes occur as a cadmium atom, Cd, becomes a cadmium ion, Cd2+? (1) The Cd atom gains two electrons and its radius decreases. (2) The Cd atom gains two electrons and its radius increases.

Explain Charles law

2 H2 + O2 → 2 H2O What is the product of this chemical reaction

Which of the following is a chemical property? A.) Ability to burn B.) Mass C.) Density D.) All of the above

What is the density of rock if it has a mass of 25 g?