Quiz Questions

Choose True or False

When heat is added to a body, the particles of the body usually result

increase in volume and temperature.

The process by which the nuclei of radio active atoms are split into 2 or more smaller nuclei is called what

A 11.8-gram sample of zinc is heated to 98.15°C in a boiling water bath. The hot metal is then immersed in 25.35 grams of water that is initially at 21.82°C.

Initially, 1.00 mol of an ideal monatomic gas has 75.0 J of thermal energy. If this energy is increased by 24.0 J, what is the change in entropy?

What is the acceleration of a car that increases its velocity from 0 to + 14m/s in 10s?

An object moving at 30 m/s takes 5 sec. to come to a stop. What is the object's acceleration

When a brick is dropped from the roof of a house, it lands on the ground with a speed v. What will the speed at ground level be for an identical brick dropped from a roof twice as high as the first one?

The scientific method begins with recognizing a problem. The recognized problem in this scenario is, "Why is the printer in the office not working?" Choose the hypotheses that are testable and from which an experiment can be formed.

The correctly balanced equation for H2O2 → H2O + O2 is

How would an unbalanced chemical equation convey misleading information about what took place during a chemical reaction?

A car rounds a 75-m radius curve at a constant speed of 18 m/s. a ball is suspended by a string from the ceiling the car and moves with the car. the angle between the string and the vertical is: