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Which scientist developed the atomic model with electrons moving around a central nucleus in definite orbitals?
number of protons
compressed spring
the bonds between the molecules become weaker, and the molecules move farther apart
The speed of the reaction would increase
a mass of 100 grams and a volume of 10 milliliters
Miels Bohr
a central, positive nucleus with orbiting electrons
the car might continue at the same speed and direction
If the forces acting on a car in motion were unbalanced, any of these could happen except
number of protons
compressed spring
the bonds between the molecules become weaker, and the molecules move farther apart
The speed of the reaction would increase
a mass of 100 grams and a volume of 10 milliliters
Miels Bohr
a central, positive nucleus with orbiting electrons
the car might continue at the same speed and direction
Which of these measurements represents a n object with the highest density?
number of protons
compressed spring
the bonds between the molecules become weaker, and the molecules move farther apart
The speed of the reaction would increase
a mass of 100 grams and a volume of 10 milliliters
Miels Bohr
a central, positive nucleus with orbiting electrons
the car might continue at the same speed and direction
Which of these best describes what happens to the water molecules when the temperatures of liquid is increased?
number of protons
compressed spring
the bonds between the molecules become weaker, and the molecules move farther apart
The speed of the reaction would increase
a mass of 100 grams and a volume of 10 milliliters
Miels Bohr
a central, positive nucleus with orbiting electrons
the car might continue at the same speed and direction
A block of iron will react with acid to produce hydrogen gas. Which of these describe what will happen if iron powder were used instead of a block of iron?
number of protons
compressed spring
the bonds between the molecules become weaker, and the molecules move farther apart
The speed of the reaction would increase
a mass of 100 grams and a volume of 10 milliliters
Miels Bohr
a central, positive nucleus with orbiting electrons
the car might continue at the same speed and direction
Which of these best describes the structure of an atom?
number of protons
compressed spring
the bonds between the molecules become weaker, and the molecules move farther apart
The speed of the reaction would increase
a mass of 100 grams and a volume of 10 milliliters
Miels Bohr
a central, positive nucleus with orbiting electrons
the car might continue at the same speed and direction
Which of these makes the atoms of one element different from the atoms of another element?
number of protons
compressed spring
the bonds between the molecules become weaker, and the molecules move farther apart
The speed of the reaction would increase
a mass of 100 grams and a volume of 10 milliliters
Miels Bohr
a central, positive nucleus with orbiting electrons
the car might continue at the same speed and direction
Which object is the best example of potential energy?
number of protons
compressed spring
the bonds between the molecules become weaker, and the molecules move farther apart
The speed of the reaction would increase
a mass of 100 grams and a volume of 10 milliliters
Miels Bohr
a central, positive nucleus with orbiting electrons
the car might continue at the same speed and direction
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