Pre-Test
What is it called when a liquid becomes a solid? Is it losing or gaining energy?
What is Freezing? Gaining
Who came discovered that there is a dense nucleus in the center of the atom?
What is Ernest Rutherford
What is more dense ice or water?
What is Water
What does KMT stand for?
Kinetic molecular theory
Which of the following is a chemical change?
a. crumpling a piece of paper
b. lighting a match
c. dissolving sugar in water
d. melting an ice cube
b) lighting a match
Who came up with the idea that that matter is made of tiny particles that exist in empty space
Who is Democritus?
What is the density of water? include the units.
What is 1 g/ mL
What do you call it when a liquid becomes a gas? Is it losing or gaining energy?
What is vaporization. Gaining
Water contains the elements hydrogen and oxygen that are chemically combined. Water can be broken down into these two elements by passing an electric current through water. What can be concluded about water?
a. Water is a mixture and a compound.
b. Water is a mixture and an element.
c. Water is a pure substance and an element.
d. Water is a pure substance and a compound.
d. Water is a pure substance and a compound.
Who discovered that there are negatively charged electrons in the atom?
Who is JJ Thompson
Which phrase best describes density?
a. the mass of an object
b. the ability to dissolve in water
c. the hardness of an object
d. the quantity of mass in a certain volume of material
d. the quantity of mass in a certain volume of material
When is it called when a gas becomes a liquid? Is it losing or gaining energy?
What is Condensation? Losing
Found inside of protons and neutrons
What are quarks?
Who came up with the idea of energy levels or shells that the electrons stay inside of?
Who is Niels Bohr
What is the density of steel if the mass of it is 16 grams and the volume is 2 cm3?
8 g/cm3
Which is bigger a electron or a proton?
What is an proton
What is it called when a solid becomes a gas? Is it losing or gaining energy?
What is Sublimation
Particles that can not be broken down anymore are called what? Give one example.
What is an elementary particle.
Who discovered that there are neutrons inside the nucleus with a neutral charge?
Who is James Chadwick
What's the name of the largest machine in the world used to study the smallest particles.
The Large Hadron __________
What is the The Large Hadron Collider?