Atom, Molecule, Element, or Compound?
The smallest particle of an element
Atom
What are the rows on your periodic table called?
Periods
What is the central part of an atom called?
Nucleus
Which row is chlorine in? (Cl)
3
Metalloid
Element that has both characteristicts of both metals and nonmetals and is a solid
A substance that cannot be broken down into something simpler
Element
What are the columns on your periodic table called?
Groups
A proton has a ____ charge, a neutron has a ____ charge, and an electron has a _____ charge.
Positive, neutral, negative
Which column is silver in? (Ag)
11
Is metal a good conductor of electricity?
YES
Two elements chemically combined together
Compound
What does the number at the top of the element square mean?
The number of protons in the element
Two or more atoms of the same element that have different numbers of neutrons
Isotope
How many neutrons does helium have?
2
Metalloid is the same as what on your periodic table?
Semi-metals or transition metals
Multiple atoms chemically connected in a group
Molecule
If potassium (K) has an element number of 19, how many electrons does it have?
19
What are the five parts of the atom that are listed on your worksheet?
Nucleus, electron orbit, proton, neutron, electron
How many neutrons does hydrogen have?
0
Which group (metal, metalloid, nonmetal) is malleable?
Metal
Two molecules of the same kind of atom chemically combined together
A bigger molecule
What's the difference between a mass number and atomic mass?
Mass number is the number of protons and neutrons added together.
Atomic mass is the average mass of neutrons found on the Earth.
If you see:
An element with 5 protons and 6 neutrons & an element with 5 protons and 7 neutrons, these are...?
What is the number of neutrons in Iron?
30
Which group of elements is a bad conductor of heat?
Nonmetals