Which two elements make up water? oxygen and phosphorus

oxygen and hydrogen

hydrogen and sulfur

hydrogen and phosphorush

What is the number of valence electrons that most atoms prefer?

Which of these best describes an ionic bond?

How many moles of tungsten atoms are in 4.8 x10^25?

Aluminum metal reacts with aqueous cobalt (II) nitrate to form aqueous aluminum nitrate and cobalt metal.

Balance the equation. SiO2 + CaC2 → Si + CaO + CO2

How is measuring the volume of liquids different than measuring the volume of regular-shaped solids?

Which of the following best describes the motion of the particles in a piece of steel?

Student follow up The ionic equation for the reaction between zinc and sulfuric acid is. Zn (s) + 2H (aq) - - Zn" (aq) + H2 (g) a State what has been oxidised in this reaction. Explain your answer in terms of electrons.

What kind of group 1 atoms are the most reactive? a. Small atoms c. Atoms with the most electrons in the valence level b. Large atoms d. Atoms at the top of the periodic table

What does it mean when there are 2.3 x 10-4 moles?