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 are the three ways something can become charged?
contact/touching, pull apart, rubbing
What model better explains gases compressing?
The particle model
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
How does car paint work?
The powder is the same charge (repels each other), sticks to oppositely charged car
How does the spacing differ between the particles in a liquid and a gas model?
Solid particles are closer together
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 is an electric field?
The region around a charged object
What is the curved surface of a liquid in a graduated cylinder called?
Meniscus
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
What does the strength of an electric field depend on?
Amount of charge and distance.
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
Who created the model with electrons orbiting the planets?
Niels Bohr
I'm used in balloons and don't react easily, what am I?
Helium