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?
Liquids and gases are generally referred as
Fluids?
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 Compound?
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 Pure Substance?
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?