Physical Science Reviewer

Who proposed the planetary model of the atom?

• Niels Bohr

• John Dalton

• Erwin Schrodinger

• Joseph John Thomson

What BEST describes an ionic compound?

• It is usually made of a metal that shares electrons to a nonmetal.

• It is usually made of a metal that transfers electrons to a nonmetal.

• It is usually made of a nonmetal that shares electrons to a nonmetal.

• It is usually made of a nonmetal that transfers electrons to a nonmetal.

For a car travelling from one location to another, at what point in its journey is the law of inertia applicable?

• When it is speeding up

• When it is slowing down

• When it is changing direction

• When it is moving with constant velocity

What does it mean when an object is at equilibrium?

• It is in motion.

• No forces are acting on it.

• Its acceleration is constant.

• The forces acting on it are balanced.

What type of element usually loses electrons to become stable?

• Metals

• Nonmetals

• Metalloids

• Metals and nonmetals

What is the chemical formula of the compound formed when magnesium and oxygen bond together?

• MgO

• MgO₂

• Mg₂O

• Mg₂O₂

Who among the choices did NOT discover the existence of a subatomic particle?

• John Dalton

• James Chadwick

• Ernest Rutherford

• Joseph John Thomson

What type of compound is formed when carbon and hydrogen bond together?

• Ionic

• Polar

• Metallic

• Covalent

For an object falling downward, what should be the air resistance so that it does not accelerate?

• Equal to its weight

• Less than its weight

• Greater than its weight

• Objects falling downward always accelerate no matter what.

Which statement about Newton's Laws of Motion is TRUE?

• When forces are balanced, use the third law. Otherwise, use the first law.

• When forces are balanced, use the first law. Otherwise, use the second law.

• When forces are balanced, use the second law. Otherwise, use the first law.

• When forces are balanced, use the third law. Otherwise, use the second law.