Trick or Treat Science
What state of matter is the air around us?
gas
What are the smallest building blocks of matter called?
Atoms
What happens to atoms when they absorb energy?
Electrons jump to higher energy levels
Who first used the term 'atom'?
Democritus
What elements do humans need to breathe?
oxygen
True or False: Mass and weight are the same thing
False
What are the three main particles in an atom?
Protons, electrons, neutrons
What happens when electrons fall back to lower levels?
They give off light
Who discovered the electron?
J.J Thomson
Which element makes up most of the sun and stars?
hydrogen
What tool do scientists use to measure mass?
scale or balance
Which particles have a positive charge?
What kind of energy causes glow sticks to glow?
Chemical energy converted to light energy
Who discovered the nucleus?
Ernest Rutherford
Which metal is liquid at room temperatures?
Mercury
What happens to particles when the temperature increases?
They move faster
What part of the atom has almost all of its mass?
The nucleus
What color of glow stick has higher energy: blue or red?
Blue -- shorter wavelength, higher energy
Who created the model with electrons orbiting like planets?
Niels Bohr
What element do plants take in during photosynthesis?
Carbon Dioxide (or carbon)
A ghost floats through a wall-- what law of matter does this break?
True or False: Electrons are found inside the nucleus
False- they orbit outside
True or False: Atoms can glow because of electron movement
True
What does the modern model say about where electrons are found?
In a cloud-like region based on probability
I'm used in balloons and don't react easily, what am I?
Helium