periodic Table
How many Elements are there?
What is 118?
Who is credited with the discovery of the electron?
Who is John Dalton?
What does the kinetic molecular theory say about the particles that make up matter?
They are always in motion.
which state of matter does not take on the volume and shape of its container.
What is solid?
How many Groups and periods are there?
What are three main subatomic particles in an atom and what are their charges?
Protons (+) Electrons (-) Neutrons (0)
How does temperature affect the motion of gas particles according to kinetic molecular theory?
Higher temperatures increase the normal particles kinetic energy making them move faster
What phase of matter has most energy
what is Gas
Name the 3 Group family properties.
what is metals, metalloids, and nonmetals?
Why was Dalton’s atomic theory important for science?
It showed that all matter is made of indivisible atoms
Why do gases spread out to fill their containers, based on the kinetic molecular theory?
Because of the constant and fast motion of the gas particles
What Element is in the 5th period and in the 3rd group?
what is Yttrium?
Using the kinetic molecular theory, explain why solids have a fixed shape while gases do not.
Because solids have a fixed shape from their particles have no energy to move around which prevent them to move freely
what is it called when two elements combine
what is a compound?
What happens when two objects collide?
one gets more momentum and the other looses momentum