Which scientist saw the atom as a positively charged sphere with negative particles (electrons) embedded within?

Which scientist discovered that most of an atom's mass is contained in its nucleus and the rest is nearly empty space?

What is an example of a mixture?

All elements in the same group have the same number of __.

Which two elements do all organic compounds contain?

What is an example of an element?

Which families of the periodic table are the most chemically reactive?

Which substance contains an ionic bond?

Where is most of the mass of an atom located?

Density can be used as a physical property for identification of a substance because density ____.

There are very few chemically stable atoms. Which group of elements contains the most stable atoms?

Balance he following equation: ___ Mg + ___ O₂ -> ___ MgO

Which state of matter is characterized by being able to fill up the shape of a container, but does not expand when uncovered?

Which correctly describes the motion of particles in a gas?

Gravitational potential energy is potential energy that depends on what?

Which coefficients correctly balance the following equations?

___ P₄ + ___ H₂ -> ___ PH₃

Which correctly describes the motion of particles in a solid?

What is the best example of a device that converts electrical energy to light and sound?

The process of joining two atoms' nuclei and releasing an enormous amount of energy is called ___.

What is an example of an endothermic reaction?

Which is an example of radiant energy to thermal energy transformation?

At which point does a roller-coaster have the greatest kinetic energy?

Since chemical equations support the law of conservation of matter, they will have ___.

A student uses a force of 46N to push her bike 57 meters. How much work has she done?

An ice skater has a mass of 60kg and is accelerating at a speed of 12.5 m/s². What amount of force was applied to the skater?

What two things affect the speed of sound?

A commercial airplane is traveling at an average speed of 13km per minute. How far will this train travel in 49 minutes?

It took a bulldozer 62,000J of work to move a rock 30 meters. How much force did the bulldozer apply?

In which medium does sound travel fastest?

A skater pushes back when his foot to roll forward. Which of Newton's Laws of Motion is this?

"An object at rest tends to remain at rest unless acted upon by an outside force." This is Newton's ___.

A disturbance that transfers energy from one place to another is called a ___.

If you add another light in a series circuit with several lights, what will happen?

Which simple machine is an inclined plane wrapped around a pole or red and is used to hold things together?

"The ability to do work" is the definition of which of the following?