MATTER
The smallest unit of an element that still retains the properties of that element
What is an atom?
In a chemical reaction, the substances present before the reaction occurs are called these.
What are reactants?
What is the rate at which an object changes position?
What is speed?
The energy an object has because of its motion is called this.
What is kinetic energy?
The maximum distance a wave moves from its rest position is called this.
What is amplitude?
This subatomic particle has a negative charge.
What is an electron?
In a chemical reaction, the new substances formed are called these.
What are products?
What force pulls objects toward Earth's surface?
What is gravity?
The energy stored in an object because of its position or condition is called this.
What is potential energy?
The distance from one crest of a wave to the next crest is called this.
What is wavelength?
An atom has 11 protons. What element is it?
What is sodium (Na)?
What law states that matter cannot be created or destroyed during a chemical reaction?
What is the Law of Conservation of Mass?
A car travels 100 meters in 5 seconds. What is its average speed?
What is 20 m/s?
As an object falls toward Earth, its gravitational potential energy decreases. What happens to its kinetic energy?
What is it increases?
A wave has a frequency of 5 Hz. How many complete waves pass a point each second?
What is 5 waves?
A substance is made of two or more elements chemically bonded together. What is this substance called?
What is a compound?
Balance this equation: H₂ + O₂ → H₂O.
What is 2H₂ + O₂ → 2H₂O?
What happens to an object's acceleration when the net force acting on it increases while its mass stays constant?
What is its acceleration increases?
A roller coaster starts at the top of a hill and then moves down the track. Describe the main energy transformation that occurs.
What is gravitational potential energy changing into kinetic energy?
If the frequency of a wave increases while its speed stays constant, what happens to its wavelength?
What is the wavelength decreases?
An atom has 17 protons and 18 electrons. What is its overall charge?
What is a -1 charge?
A student mixes two clear liquids. The mixture becomes cloudy and a solid forms. What evidence most strongly indicates that a chemical reaction occurred?
What is the formation of a new substance/precipitate?
Two objects experience the same net force. Object A has twice the mass of Object B. Which object has the greater acceleration?
What is Object B?
A student says that energy is "used up" when a flashlight is turned on. Explain why this statement is incorrect.
What is energy is transformed, not destroyed?
A wave has a frequency of 4 Hz and a wavelength of 3 meters. What is its speed?
What is 12 m/s?