Chemistry Lessons 1, 2, 3

What is the law of conservation of mass?

• matter can be created
• matter can be destroyed
• matter cannot be created or destroyed
• everyone matters!

What is the line that water creates in a graduated cylinder?

• measurement
• meniscus
• milliliters
• mcbiscuits

What is the smallest unit of matter?

• particle
• atom
• molecule
• element

What is happening when something freezes?

• changes from solid to liquid
• changes from gas to liquid
• changes from liquid to solid
• changes from liquid to gas

What is happening when something evaporates?

• changes from solid to liquid
• changes from gas to liquid
• changes from liquid to solid
• changes from liquid to gas

What is the phase change from gas to liquid?

• evaporation
• freezing
• melting
• condensation

What is the phase change from solid to liquid?

• evaporation
• freezing
• melting
• condensation

What two particles are in the nucleus?

• protons and electrons
• electrons and neutrons
• protons and neutrons
• electrons

What particle is in the electron cloud?

• proton
• neutron
• electron
• spongebob

What is the number at the bottom of an element box?

• atomic number
• atomic feeling
• atomic mass
• atomic importance