Atoms & Elements
What are the 3 subatomic particles?
Proton, Neutron, and Electron
Finish this sentence: heats always moves from...
high (hot) to low (cold)
Frequency
Which type is energy from movement?
Kinetic
Which of newton's laws discusses the role of unbalanced forces?
1st Law (Law of Inertia)
Name 3 signs of a chemical change
Gas production, light production, temperature change, precipitate, color change. *Must have at least 3 for full points!*
Name the 3 types of heat transfer
Conduction, convection, and radiation
Sound is a ____ wave.
Light is a _____ wave.
Sound = longitudinal
Light = transverse
Which variable has a greater impact on kinetic energy?
Speed/velocity
Name 3 forces that act from a distance
How many protons, neutrons, and electrons are in the element Magnesium?
12
Mg
24.32
P = 12
N = 12
E = 12
When thermal energy is added to a liquid, what happens to the movement and arrangement of the particles?
Movement - faster
Arrangement - farther apart
As the amplitude of a wave decreases, what happens to the energy?
It decreases.
What are the 3 variables you need to calculate gravitational potential energy?
mass, height, gravity
A heavy textbook is resting quietly on a classroom desk. Which of the following statements best describes the forces acting on the book?
A) There are no forces acting on the book because it is not moving.
B) The forces acting on the book are balanced, resulting in a net force of zero.
C) The forces acting on the book are unbalanced, keeping it pushed against the desk.
D) Only the force of gravity is acting on the book.
B
12 g/mL
T/F: In an endothermic reaction, heat is released.
False
In which two ways does wax paper interact with light?
Transmits and absorbs.
What is the unit of measurement used for both kinetic and potential energy?
Joules (J)
Give an example of an attractive force.
Gravity, (+) and (-) electrical charges, N and S poles on a magnet
T/F: According to the law of conservation of mass, the mass of the reactants do not have to equal the mass of the products
False
An insulator is used to __________ thermal energy transfer
prevent
Order the waves from greatest to least for their level of danger: gamma, radio, visible, ultraviolet.
Hint: Look @ page 72 to assist you.
Gamma, UV, visible, radio
How can a swing be used to demonstrate the law of conservation of energy?
The greatest amount of potential are at the two high points. As soon as you start falling from those points, you are transforming into kinetic energy.
Provide an example of Newton's 3rd Law.
Answers may vary. Teacher discretion.