Atomic Structure Structure of Matter
Which of the following can be made up of two or more atoms of the same element, chemically bonded? a. atom b. mixture c. compound d. molecule
d. molecule
A push or a pull acting on an object
what is force
A balloon is rubbed all over with wool. The balloon will now attract the wool because the balloon and the wool a. are magnets b. have opposite charges c. have like charges d. have neutral charges
b. have opposite charges
Name at least 5 types of energy
mechanical, sound/light, chemical, electrical, heat, nuclear,
The formula to calculate volume or a regular object
Which of the following is smaller than a single atom? a. electron b. mixture c. element d. solution
what is a. electron
the rate of change in velocity (speed)
what is acceleration
Which of the following is not a form of potential energy? a. gravitational energy b. chemical energy c. light energy d. nuclear energy
c. light energy
The unit for measuring volume?
what is cm^3
The three particles that make up all the known matter in the universe
What are protons, neutrons, & electrons
When the forces acting on an object are balanced, what happens to the motion of that object? a. the motion changes direction b. the motion does not change c. the motion speeds up d. the motion slows down
b. the motion does not change
The law of conservation of energy states that...
although energy may change from one form to another, energy is neither created nor destroyed
What is matter
The path or orbit electrons take around the nucleus of an atom
What is an electron shell/ energy level
The speed in a particular direction
what is velocity
What is electromagnetism
An example of chemical energy being transformed into mechanical energy? a. blender b. ceiling fan c. flashlight d. digestive system
What is d. digestive system
An area around electric charge that experiences forces exerted by the electrical charge
what is an electric field
An electron found on the outtermost shell of the atom
What is a valence electron?
a noncontact force that attracts objects toward one another
gravity
What are the two basic kinds of circuits?
series and parallel
A lightbulb changes _________ energy to ________ energy
electrical to thermal
Electrical current is best defined as
what is the movement of electrons in a single direct path