Why are some elements more reactive than others?

How many seconds are in one millisecond? A. 1/1,000 B. 1/100 C. 100 D. 1,000

Which of the following is not a pure substance an element, molecule, compound, or mixture?

What happens if you put a thermometer in a cup that's been heated for 5 minutes in the microwave? What number does it go to?

This unbalanced equation describes a redox reaction. what is the total increase in oxidation number of the species being oxidized? fe2o3 (s) + co (g) → fe (s) + co2 (g) + 1 + 2 + 3 + 6 description

What element forms a compound with chlorine with the general formula MCl?

When electricity flows through a wire which of the following appears? Question 6 options: Gravitational Field Magnetic Field

Which of the following statements are correct about the chemical reaction? H2 + O2 - > H2O2 versus 2 H2 + O2 - > 2 H2O? They are both balanced chemical equations. The two reactions are equivalent. The laws of thermodynamics apply to both.

Explain how you would convert the moles of a compound to the made (grams) of the same compound

Which is the best definition of activation energy? O the energy required to end a chemical reaction O the energy required to bind a substrate to an active site O the energy required to form or break the bonds of reactant molecules O the energy

A chemist wants a 0.100 m solution of naoh. She has 0.0550 mol naoh available. What volume of solution is needed to make the mixture?