Observations
are observed or measured without changing the matter for identification and classification
What are physical properties?
this remains constant regardless of size
What is density?
evaporation, dissolving, melting or thawing, boiling, condensation
What is physical change?
Units for mass and volume
What is g or kg for mass and mL or cm3 for volume?
Symbol for arsenic?
As
these are where no new substances are formed even if there is a change in shape, size, phase, or mass
What are physical changes?
density of 1 g/cm^3
What is water?
rust, baking soda and vinegar, burning, Maillard’s reaction
This type of measurement is used to find the volume of an irregular shaped object by seeing the difference the water level has moved after placing the object into a measured container
What is water displacement?
symbol for sodium
What is Na?
mass, color volume, hardness, luster, malleability, brittleness, state of matter, density
What is physical property?
mass cannot be created or destroyed and can only be changed from one form into another
What is Law of Conservation of Mass?
the degree of how compact or tight a substance is
What is density?
The formula for density
What is mass divided by volume?
symbol for potassium
What is K?
evaporation, dissolving, melting or thawing, boiling, condensation
Chemical change: combustion, flammability, reactivity
What is physical change?
color, gas, temperature, precipitate, odor, light
What is evidence of chemical reaction?
the process in which atoms of the same or different element rearrange themselves to form a new substance
What is chemical reaction?
Formula for mass
What is density multiplied by volume?
Element name of Hg
What is mercury?
are characteristics of a substance that describe its tendency to combine with other substances and form new products
What is chemical properties?
left of the arrow in a chemical reaction
What is reactants?
combustion, flammability, reactivity
What is chemical change?
Formula for volume
What is mass divided by density?
Symbol for lead
What is Pb?