So Small
What does "atomos"mean?
uncuttable
How many protons are in He?
2
What is the charge of a proton?
Positive
What are the two major groups on the periodic table?
metals and nonmetals
What is the name for element Xe?
Xenon
Who wrote the Atomic Theory?
How many electrons are in Ne?
10
True or false
Neutrons have a negative charge.
False
How are the columns labeled?
Group numbers
What is the element symbol for Lead?
Pb
What is the smallest unit found in a bar of iron?
Electron, Nucleus, Element, Atom
Atom
How many neutrons in Tin?
69
true or false
Neutrons possess no net charge.
true
How are the elements organized on the periodic table?
By their properties
Is Barium a metal or nonmetal?
metal
What is the smallest subatomic particle?
electrons
How many Oxygen atoms in CO2?
2
Which two subatomic particles are located in the nucleus?
protons and neutrons
Which two elements have similar properties?
F, Cl, C, He
F and Cl
Which statement is true?
Elements are combinations of different atoms.
Elements are fast moving subatomic particles.
Elements can be separated into smaller atoms.
Elements can combine to make living and nonliving things.
Elements can combine to make living and nonliving things.
Who discovered electrons?
Thompson
How many Oxygen atoms in one molecule of water?
1
Describe the charge and location of electrons.
Electrons= negative charge
Electrons are located outside of the nucleus , in orbitals.
Which two elements are in the same family?
Ne, Mg, B, Kr
Ne and Kr
Why are the elements Fluorine (F), Chlorine (Cl), Bromine (Br), and Iodine (I) found in the same group on the periodic table?
They have similar properties