Matter of Fact
One example and Non example of matter
Ex. water, humans, air
Non ex. thoughts, energy, heat, light
Formula for density
D = M/V
the ability of a substance to catch on fire easily
flammability
Difference between a physical and chemical change?
Physical change does NOT change what the substance is made of, a chemical change does
Which state(s) of matter takes the shape of the container its placed in?
liquid and gas
Two methods to calculate volume
Normal object - length x width x height
abnormal shape - displacement method
final volume - initial volume
A metal turned into a reddish brown color. What is the reddish-brown substance called? What two things were needed for the metal to change color?
iron and oxygen
What two things can speed up a chemical change?
heat or enzymes
What is needed to be added or taken away in order for a state change to occur?
heat
What is the difference between mass vs. weight?
Mass stays the same no matter the location. Weight is less in space because it depends on gravity.
Give an example of oxidation
apple turning brown or rotting
statue of liberty - copper turning green
What happens to the particles in a chemical change?
atom bonds break and rearrange but the number of atoms stay the same
List the states of matter from the most to least amount of space between particles. Give an example of each one
gas = oxygen
liquid = water
solid = pencil
volume, mass, weight, density, solubility, magnetism, ductility, malleability, state change, luster, clarity, viscosity
The best property to identify an unknown substance
density, melting, boiling, and freezing point
Explain the Law of Conservation of Mass through an example
the mass of the wood and fire is equal to the mass of the ashes and smoke. Atoms transform into something new but there are still the same amount of atoms before and after the reaction
Draw the diagrams of the particles of a solid, liquid, and gas. Label the following:
most space between particles
most attraction between particles
Particles move the slowest
State with the most energy
Particles glide past each other
See diagrams
A student performs an experiment with three unknown fluids and obtains the following measurements:
Fluid A: m = 850 g, V = 1000 mL
Fluid B: m = 450 g, V = 560 mL
Fluid C: m = 120 g, V = 1100 mL
Draw how the fluids would be layered if they were combined in a beaker.
Submit for teacher approval
5 signs a chemical reaction occurred
bubbles, color change, temperature change, form of a precipitate, light, odor
State 3 physical changes and 3 chemical changes
Physical: ripping paper, ice melting, mixing salt and water
chemical: burning wood, rusting chains, rotted apple, baking a cake