Chapter 1 Vocab
The study of composition, structure, properties, and reactions of matter.1
What is Chemistry?
Kilo-
What is the prefix for 1000?
Pure substances that contain only one type of material.
What are elements?
is/of = %/100
or
part/whole=%/100
What is the percentage formula?
2.54 cm = 1 inch
How to convert centimeters to inches?
Anything that takes up space and can be weighed. Has mass and makes up all things.
What is Matter?
The number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value.
What is Significant Figures?
A mixture where the composition is uniform throughout and different parts are indistinguishable.
What is a homogenous mixture?
d = m/v
Ex. solids and liquids: d = g/cm3 and g/mL gas: g/L
What is the formula for density?
273.15 K (answer in °C)
What is 0° C in K?
Any sibstance that has a defined composition.
What is a Chemical?
Numbers that have no uncertainty. Has an infinite number significant digits.
Ex: ounces in a pound, feet in a mile
What are Exact Numbers?
A measure of how hot or cold an object is compared to another object.
What is temperature?
1 g / 1000 mg or 1000 mg / 1 g
What is the conversion from grams to milligrams?
1 cm3 = 1 cc = 1 mL
What is a cubic centimeter?
Observation, hypothesis, expirements and conclusion.
What are the four parts of the Scientific Method?
How close a set of measured values is to the true value.
What is accuracy?
The energy of motion.
What is kinetic energy?
1 Cal = 1 kcal = 1000 calories
What is a food calorie?
Conduction, Convection, Radiation.
What are the three types of heat transfer?
A way of writing very large or very small numbers. For example, 650,000,000 can be written as 6.5 ✕ 10^8
What is Scientific Notation?
How close the measured values are to one another.
What is precision?
A solid changing state directly to a gas.
What is sublimation?
cal or J / g °C
What is the formula for Specific Heat?
An instrument used to measure heat transfer.
What is a calorimeter?