Protons&Neutrons
How many protons and neutrons does hydrogen have?
Protons: 1
Neutrons: 0
What are the vertical columns called?
Answer: Groups
What does STP stand for?
Correct Answer: standard Temperature and Pressure, 273.15K, 1 ATM
# of sig figs: 1234
4
What is the definition of a Proton?
Answer: A small, positively charged particle of matter found in the atoms of all elements.
The elements found in group 3-12 that form or make compounds with distinctive colors. are called the ______________ ___________.
Correct Answers: Transition Metals
What is the definition of Gas Density?
Correct Answer: how compact a gas is
# of sig figs: 0.00102
3
How many protons and Neutrons does Phosphorus have?
Protons: 15
Neutrons: 16
Which element is a "One-of-a-Kind"?
Correct Answer: Hydrogen
What is the Ideal Gas Law?
Correct Answer: it combines Charles, Boyles, and Avagadros laws
round # to 3 sig figs: 234.45
234
What is the definition of a Neutron?
Answer: A neutral subatomic particle that, in conjunction with protons, makes up the nucleus of every atom except ordinary hydrogen.
What NON-METAL family is the most reactive and WHY?
Halogens -because they only need only one more electron to reach 8 valence electrons.
What is the Density of a Gas Equation?
Correct Answer: D=mP/RT
calculate using sig figs: 123.4567cm - 22.00cm= ?
Correct answer: 145.46 cm
True or False: The mass of a proton is the same as a neutron but 1840x greater than the mass of electron.
Correct Answer: True
What are metalloids?
Elements that have properties of BOTH metals and non-metals and are found along the zig-zag line on the periodic chart.
What is the Ideal Gas Law Equation?
Correct Answer: PV=nRT
calculate using sig figs: 123.4567cm x 2.00cm= ?
Correct Answer: 247 cm^2