A double replacement reaction is a reaction in which one element replaces a similar element within a compound. (2 points) True
False

Q1: Sodium metal reacts with water to produce hydrogen gas.

What best describes this reaction?

A: A single replacement reaction takes place because sodium is more reactive than hydrogen.

Q2:When Pb and AlCl3 react together, lead (Pb) can replace aluminum (Al) in the compound because lead is lower on the activity series.

A: False

Q3:When HNO3 and Au are mixed together, what do you expect to happen, and why?

A:No reaction, because Au is lower on the activity series and cannot replace H

Q4:Which of the following is a double replacement reaction?

A:Ca(OH)2 + H2SO4 → CaSO4 + 2H2O

Q5:The table shows the nature of reactants and products formed in a certain type of chemical reaction.

Nature of Reactants and Products

ReactantsProducts

Nonmetal + Ionic compoundNonmetal + Ionic compound

Which of the following is true about the type of chemical reaction?

A:It is a single replacement reaction, and the anions in the two ionic compounds are different.

Q6:A double replacement reaction is a reaction in which one element replaces a similar element within a compound.

A: False

answer: a chemical reaction

explanation:

im not wrong

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.