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A student mixes two substances that undergo a chemical reaction. The reaction forms three products, each having a mass of 25 grams. What is the total mas of the reactants?
older layers of sedimentary rock lie beneath younger layers
metalloid
burning it
Group 17
A and BC
They vibrate but do not move past each other.
temperature
75 grams
A student wants to find the best conditions for growing pumpkins. The student conducts research and learns that pumpkins grow best in partial sunlight. What is the independent variable?
older layers of sedimentary rock lie beneath younger layers
metalloid
burning it
Group 17
A and BC
They vibrate but do not move past each other.
temperature
75 grams
Which of these BEST describes the movement of particles in a solid object?
older layers of sedimentary rock lie beneath younger layers
metalloid
burning it
Group 17
A and BC
They vibrate but do not move past each other.
temperature
75 grams
A student is investigating the properties of a piece of wood. Which of these actions would change the chemical properties of the wood?
older layers of sedimentary rock lie beneath younger layers
metalloid
burning it
Group 17
A and BC
They vibrate but do not move past each other.
temperature
75 grams
The law of superposition states that __________________________________.
older layers of sedimentary rock lie beneath younger layers
metalloid
burning it
Group 17
A and BC
They vibrate but do not move past each other.
temperature
75 grams
Which describes an element that is located along the zigzag line of the periodic table?
older layers of sedimentary rock lie beneath younger layers
metalloid
burning it
Group 17
A and BC
They vibrate but do not move past each other.
temperature
75 grams
A + BC --- B+ AC What are the reactants in the chemical equation.
older layers of sedimentary rock lie beneath younger layers
metalloid
burning it
Group 17
A and BC
They vibrate but do not move past each other.
temperature
75 grams
Which group of nonmetals is the most reactive?
older layers of sedimentary rock lie beneath younger layers
metalloid
burning it
Group 17
A and BC
They vibrate but do not move past each other.
temperature
75 grams
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