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Which of these is measured using the pH scale?
The reaction would happen at the same speed
Endothermic
120 grams
Heat/energy was absorbed
The result of mixing chemicals in a chemical reaction
The law of conservation of matter
The concentration of hydrogen ions
The concentrations of hydrogen ions for different substances can be very different
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?
The reaction would happen at the same speed
Endothermic
120 grams
Heat/energy was absorbed
The result of mixing chemicals in a chemical reaction
The law of conservation of matter
The concentration of hydrogen ions
The concentrations of hydrogen ions for different substances can be very different
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?
The reaction would happen at the same speed
Endothermic
120 grams
Heat/energy was absorbed
The result of mixing chemicals in a chemical reaction
The law of conservation of matter
The concentration of hydrogen ions
The concentrations of hydrogen ions for different substances can be very different
Which type of reactions absorbs heat from the surroundings?
The reaction would happen at the same speed
Endothermic
120 grams
Heat/energy was absorbed
The result of mixing chemicals in a chemical reaction
The law of conservation of matter
The concentration of hydrogen ions
The concentrations of hydrogen ions for different substances can be very different
What is the definition of “products” in a chemical reaction?
The reaction would happen at the same speed
Endothermic
120 grams
Heat/energy was absorbed
The result of mixing chemicals in a chemical reaction
The law of conservation of matter
The concentration of hydrogen ions
The concentrations of hydrogen ions for different substances can be very different
Which of these best describes why the pH scale is used to describe how acidic or basic a solution is?
The reaction would happen at the same speed
Endothermic
120 grams
Heat/energy was absorbed
The result of mixing chemicals in a chemical reaction
The law of conservation of matter
The concentration of hydrogen ions
The concentrations of hydrogen ions for different substances can be very different
You did an experiment where you combined a few chemicals and experienced an endothermic reaction. What happened?
The reaction would happen at the same speed
Endothermic
120 grams
Heat/energy was absorbed
The result of mixing chemicals in a chemical reaction
The law of conservation of matter
The concentration of hydrogen ions
The concentrations of hydrogen ions for different substances can be very different
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?
The reaction would happen at the same speed
Endothermic
120 grams
Heat/energy was absorbed
The result of mixing chemicals in a chemical reaction
The law of conservation of matter
The concentration of hydrogen ions
The concentrations of hydrogen ions for different substances can be very different
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