Units
what is the prefix meaning one-thousandth
milli
3
What step of the scientific method involves making an educated guess based on observations
Hypothesis
Is color a physical or chemical property
Physical
What type of matter has a fixed composition and identical properties
Pure substance
how many milliliters in a liter
1000
How many sig figs in 0.00504
3
What part of the scientific method is used to test a hypothesis
Experiment
Is reactivity with another substance a physical or chemical property
Chemical property
What type of matter is physically mixed but not chemically bonded
Mixture
2.5 meters to centimeters
250 cm
how many sig figs in 4500
2
What is the main difference between a scientific law and a scientific theory
A law describes what happens; a theory explains why it happens
What is the difference between an intensive and extensive property
Extensive depends on amount; intensive does not
What is the difference between an element and a compound
An element cannot be broken down chemically; a compound can
0.75 grams to kilograms
0.00075 kg
what is the answer to (0.00145+0.13)/ (0.6)(0.3)(0.4) in 3 sig figs
1.83
Can a scientific theory ever become a scientific law
No
Is density an intensive or extensive property
Intensive
What type of mixture is uniform throughout
Homogeneous mixture
what is 3.6 cm^3 in milliliters
78
Why are scientific theories widely accepted even though they are never “proven"
Because they are supported by repeated experiments and have never been shown to be wrong
Why is mass considered an extensive property but density is not
Mass depends on the amount of matter, but density does not change with amount
Is milk homogeneous or heterogeneous
Heterogeneous