You mix solution A (70 g) with solution B. When they are mixed, a chemical reaction occurs and you end with a total mass of 190 g). What should the mass of solution B be?

You did an experiment where you combined a few chemicals and experienced an endothermic reaction. What happened?

What is the definition of “products” in a chemical reaction?

In chemical reactions atoms are rearranged. John Daltons proposed that the number of each type of atom stays the same. Which idea did Dalton's statement help explain?

Which type of reactions absorbs heat from the surroundings?

A block of iron will react with acid to produce hydrogen gas. Which of these describes what would happen if iron powered were used instead of a block of iron?

Which of these best describes why the pH scale is used to describe how acidic or basic a solution is?

Which of these is measured using the pH scale?

You combine vinegar, that has a pH of 2, with bleach, that has a pH of 14. The mixture will be a

Which of these does not stay the same during a chemical reaction?

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