3 main concepts that scientists use to explain the universe
What is observation, logic, experimentation
100
This changes when a physical change has taken place.
What is form, not composition
100
Found in the nucleus and holds a positive charge
What is a proton
100
Matter and antimatter are complete this
What is opposite
100
In order to float what must the objects density be?
What is less than 1.00g/ml
200
Inertia is:
What is the ability to resist motion?
200
2 of the 4 major physical properties
What is mass, weight, volume, density
200
These two particles make up the nucleus
What is proton and neutron
200
Antiparticles and particles cannot touch because
What is they create too much energy during attraction and repulsion forces between them
200
In order to sink, what must the object have
What is a density more than the density of water at 1.00g/ml
300
Newton's First law of motion
What is the Law of Inertia: An object in motion stays in motion and an object at rest stays at rest until an outside force changes it.
300
density formula
What is d is equal to mass divided by the volume
300
If the mass number is 16 and the number of protons is 7, how many neutrons are in the atom? How do you know?
What is 9? The mass number equals the number of protons plus neutrons. Knowing one of those particles allows us to solve the question mathematically.
300
A positron and electron form from this
What is a photon striking through a solid
300
As the volume of an object decreases, the density increases which means that the object is at risk of
What is sinking
400
2 components for the definition of matter
Anything that takes up space and has mass
Anything that has inertia
400
Relationship between volume and density
What is As volume increases, density decreases. Inverse relationship.
400
If a neutral atom progressively gains or loses electrons, it will become this
What is an ion-charged particle
400
After the positron and electron are created, they will collide and be destroy and release this
What is radiation
400
Understanding volume and density relationships, what would the ideal boat look like
What is low edges and a very wide surface area in order to increase the volume to decrease density
500
Explain how energy could possibly be considered matter.
What is As the mass of an object increases, the particle number has increased. Because particles are not motionless, they contain energy. Therefore, by adding energy, mass will increase.
500
Explain why volume would need to increase in order for density to decrease when discussing whether or not an object can float.
What is An object floating relies on the fact that the density of water is 1.00 g/mL. In order to float the object will need to have a density less than that of water. By increasing the volume of an object, the mass is able to be dispersed, therefore decreasing density.
500
Atoms tend to gain or lose electrons in order to increase this
What is stability?
500
What is a PET scan and what is it used for
What is positron emission therapy
Allows us to see highlighted areas that are dangerous to the body
500
Find the specific gravity of an object that has displaced 4ml of water if the mass is 8g. Will this object sink or float?
What is specific gravity equals 2 and the object will sink because its density is greater than water.