Chemistry
What is the difference from chemical change to a physical change?
A chemical change changes the substance and a physical change does not.
How is Voltage Measurd?
What is Volts
What are the 3 states of matter?
Solid, liquid, gas
Is copper a conductor?
True
what is static electricity?
static electricity is formed when there is an imbalance between negative and positive charges in an object.
What is the formula for Mass, Volume and density.
Mass= Density times Volume M=DxV
Volume= Mass divided by Volume V=M/D
Density=Mass divided by Volume D=M/V
Current is measured in what unit?
It is measured in amps.
A change that produces a new substance?
What is a Chemical change
a material that allows electrons to move threw it?
What is a conductor.
What is the definition of the Bohr diagram?
Bohr diagrams show electrons orbiting the nucleus of an atom like planets that orbit around the sun. the electrons are pictured as traveling in circles at different shells, depending on which element you have.
A change that does not produce a new substance?
What is a physical change
Whats the difference between current and voltage?
The difference is current is the flow rate of electrons and voltage is the electric difference between to points.
What is matter
The definition of Matter is anything that takes up space or has mass and volume.
The path which electrons flow?
What is a circuit.
What is a homogeneous mixture?
A substance that contains contains parts that have different properties from those of the other Parts
A measure of how much mass is contained in a unit volume?
What is density.
how is Electricity measured?
Electricity is measured using watts.
The inner part of an atom that contains the proton and the neutron is called the
Nucleus
What is used to measure resistance.
resistance is measured in ohms.
what is the difference between a homogeneous mixture and a heterogeneous mixture?
A homogeneous mixture is chemical combined and you cannot pick out the two or more substances. A heterogeneous mixture is a mixture that is not equal through out and you can pick out and separate the substances.
What is the combination of two or more chemically bonded elements?
What is a Compund.
How is Lightning formed?
what is Lightning is formed when the negative charges (electrons) that are in the cloud are attracted to the positive charges (protons) in the ground?
This is a chart which organizes the chemical elements?
What is the periodic table.
What is grounding?
Grounding is when there is a wire that that is put into the ground and is used for a machine to safely discharge electrons into the ground.
what scientists created the plum pudding model?
Joseph John Thompson.