The chemical symbol for the element calcium is Ca what would be the symbol representing calcium atoms that have lost two electrons?

is it Ca^+2

For each reaction, identify the element that gets reduced and the element that gets oxidized. 2AgCl+Zn⟶2Ag+ZnCl2 Identify the element that gets reduced. chlorine zinc silver Identify the element that gets oxidized.

Which of the following provides evidence to support Thomson's hypothesis about electrons? Gold foil experiment Cathode ray experiments Spectrum of colors emitted by gas Radiation produced when beryllium is bombarded with alpha particles

When an acid and a base are mixed together, a neutralization reaction occurs. the products of an acid-base reaction do not have the chemical characteristics of either the acid or the base that originally reacted?

Which of the following changes has a decrease in entropy? A. N2O4 (g) yields 2NO2 (g) B. C2H5OH (l) + 3O2 (g) yields 2CO2 (g) + 3H2O (g) C. 3O2 (g) + 2KCl (s) yields 2KClO3 (s) D. H2O (l) yields H2O (g)

Which solution is a homogeneous mixture? O sand and water salt and water salad dressing soil

A solid substance turns into a liquid. Which best describes this change?

List two things you know about nonrenewable energy

Does a mole of hydrogen have the same mass as a mole of oxygen? explain your answer.

A 0.500-L sample of H₂SO₄ solution was analyzed by taking a 100.0mL aliquot and adding mL of. After the reaction occurred, an excess of ions remained in the solution. The excess base required mL of for neutralization.

Ammonia can be prepared by the reaction of magnesium nitride with water. The products are ammonia and magnesium hydroxide. Write and balance the equation.