Chemistry Test Chapter 5 Flashcards
What does 1 millimeter of mercury equal?
1 torr
What is number of protons in an atom?
Atomic number
What does the standard atmosphere (atm) equal?
760 torr
760 mmHg
What isotope is the atomic mass unit defined relative to?
Carbon -12 atom
Which step of the scientific method involves thinking about nature to develop an idea about how something works?
Hypothesizing
What is a microsecond?
One millionth of a second 0.0000001
What is the standard temperature and pressure ( stp)
1atm
273k
How many atoms are in exactly one mole of atoms?
6.02•10^23
Avogadro’s number
What equals 0 K?
Absolute zero
= -273 degrees C
How do you measure atmospheric pressure?
Barometer
Aneroid barometer
What is a barameter used for?
Measure atmospheric pressure
Define pressure
A push per unit
Pressure=force/area
What happens in a solid state of matter?
Molecules held rigidly and compact
Define precision
Consistency of measurement over and over again
What is or define Avogadro’s number?
6.02•10^23 particles/molecules
What is the formula of copper chloride?
CuCl
Formula for combination reaction
A+B=AB
Formula for decomposition reaction
AB=A+B
Formula for double-displacement reaction
AB+CD=AD+CB
Formula for single-displacement reaction
A+BC=B+AC