Classification of Matter
Anything that takes up space & has mass.
What is matter?
Ice melting.
What is a physical change?
Pouring a liquid off while keeping the solid at the bottom.
What is decanting?
What is density? What is the density formula?
CER
What is Claim, Evidence, & Reasoning?
Properties of this substance make it easy to separate by physical properties & has a uniform composition.
What is a homogeneous mixture?
Identity stays the same.
Boiling a liquid away to get a sal/substance to form
What is evaporation?
A block has the density of 1.31 g/cm^3, will is sink or float on water?
What is it will sink?
H2, N2, H2O, CO2, etc.
What are molecules?
A mixture of water and oil
What is a heterogenous mixture?
Chewing your food.
What is a physical change?
Separate: salt+ sand + iron filings
What is use a magnet, add water, filter w/ funnel/filter paper, & boil?
Put in order: A (1.32 g/ml), B (0.123 g/mL), C (5.67 g/cm^3).
What is C, A, B?
What is an element?
Classify the substances that make up a "Pure Substance"
What is an element, molecule, & compound?
Signs of a chemical reaction.
What is light, gas, temperature change, precipitate, or color change?
When separating a mixture, we are focusing on these types of changes.
What is physical change?
Mass = 100 g; Volume = 10 cm^3
What is density = 10 g/cm^3?
Water boils at 100 degrees C.
What is a physical property?
Two atoms that have a bond; can be the same or different elements.
What is a molecule?
Decomposing leaves.
What is a chemical change?
Sand in H2O
What is filter?
Density = 2 g/mL; Volume = 10 mL
What is mass = 20 g?
An insoluable solid that forms from two liquids
What is a precipitate?