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formula for density
D=m/v
why would a marble sink and a glass Of water
Marbles densities more than the water
Why is density important part of matter?
so we can identify substances and help us understand if the object were float or sink
solute definition
what is being dissolved for example Kool-Aid
Solvent definition
Dissolving solution, for example, water
concentration define
Measure the amount of solute in a given amount of solution
What is the solvent in the solute for sugar dissolving in water?
The solvent is water in the solute is sugar
Independent variable
variable that is changing
depend Variable
Variable that is affected by the change, for example, what is being measured
Scientific method order
Observe, Make hypothesis, experiment, analyze, data, conclusion
Qualitative data
does not include numbers, for example how does it feel, taste or the color?
quantitative data
Has to do with numbers, for example, in trial one the car went 70 mph
What are the units we used to measure a graduate cylinder length and mass
Grams, centimeters inches feet in grams/milliliters
Why is it important to be able to separate Mixtures
To remove tops, toxic substances, for example, salt from drinking water
process of distillation
yeah, purifying a liquid by a process of heating and cooling
how to find the volume of an irregular object
V=m/d
What holds atoms together in a molecule?
Chemical bond
define Atom
Basic particles that make up matter
difference between molecule and compound
A compound has different atoms and molecules have the same atoms
table, salt and water are examples of what?
Compounds
physical property definition
Observed without changing anything
Chemical property
Describe its ability to change into different substances
textures and color are what property
Physical
Heating a liquid and measuring the temperatures at which it boils is what property
Physical
describe her methane as a gas can easily catch fire is what kind of property
Chemical
Physical change
Alters the appearance, but not the substance
Chemical change
Produces new substance
what type of change is salt water
Physical
what type of change is tarnishing metal
Chemical
i’ve been burning wood is what type of change?
Chemical
define mixture
Two or more kinds of matter are put together, for example, trail mix
solution
A solution is dissolved into another, for example saltwater
Homogeneous mixture
Having uniformity same throughout
heterogenous Mixture
Having visually distinguishable components
define matter
Anything in the universe that takes up space