Properties of Matter
This is the formula for calculating density.
What is density = mass / volume?
Element #6 on the Periodic Table, this is the number of valence electrons in a carbon atom.
What is 4 electrons in the outer shell?
This is the direction that heat transfers.
What is from hot to cold?
This is the energy of motion.
What is kinetic energy?
This is the total amount of vibrating, kinetic energy of particles.
What is heat?
This is the formula for calculating weight.
What is weight = mass x gravity?
This is the type of bond formed by atoms when they share 1 or more pairs of electrons.
What are covalent bonds?
This is the type of heat transfer that occurs due to high kinetic energy particles colliding with their lower energy neighbors.
What is conduction?
This color is very good at both absorbing and emitting electromagnetic waves.
What is black?
This is the word equation for photosynthesis.
What is carbon dioxide + water -(in the presence of light energy)-> oxygen + glucose?
This is the difference between mass and weight.
What are mass is the amount of stuff, weight is a force; weight changes depending on the strength of gravity?
These materials are good conductors of electricity and heat because they have charged particles that can move freely, even when the materials are solid.
What are metals?
This is the type of heat transfer where high kinetic energy particles take up more space and float, while low energy particles move in to fill the leftover space.
What is convection?
Objects that are dull or matte in appearance are very good at these 2 things.
What are absorbing and emitting electromagnetic radiation?
This is the molecule that absorbs light energy in plants, and the organelle that contains these molecules.
What are chlorophyll and chloroplasts?
This is the reason why objects float in water, and the reason why objects sink in water.
What are the objects are less dense than water, and the objects are more dense than water?
These materials have high melting and boiling points because the electrostatic forces act from every particle, in every direction.
What are ionic compounds?
This is thermal energy transfer where waves in the electromagnetic field transfer energy without the need for particles.
What is radiation?
These are the 3 types of thermal energy transfer, and the states of matter we most commonly find them in.
What are conduction and solids, convection and fluids, and radiation and electromagnetic waves?
Carbohydrates are long chains of this sugar molecule, and this is the chemical that changes color when coming in contact with carbohydrates.
What are glucose and iodine?
Calculate!
*no need to answer in the form of a question*
A box weighs 40 Newtons, and has a volume of 10 liters. Yet Qin says the box will float in water (density = 1kg/L). Prove she is correct or incorrect.
40N is the weight
mass = weight / gravity
mass = 40N / (10N/kg); mass = 4kg
density = mass / volume
density = 4kg / 10 liters; density = 0.4kg/L
floats! 0.4kg/L < 1kg/L
This is the reason that ionic compounds can conduct electricity when they are liquid or dissolved in solution.
What is the ions are charged particles that can move?
This is particles near the surface of a liquid randomly gaining enough kinetic energy to escape as a gas, and the change in the heat of the remaining liquid.
What are evaporation and decrease in heat (total thermal energy)?
These are the thermal mechanics of how humans sweat, and the specific name of the process that makes it work.
What is high energy particles escape the sweat by evaporation, leaving the remaining liquid colder than our skin, our hot body then transfers heat to the cooler sweat; cooling us down?
This is the name of a category of salts, like sodium chloride, characterized by this type of bond with a similar name.
What are ionic compounds and ionic bonds?