Atoms, Elements & Molecules Flashcards
List the following in order from smallest to largest
- ant
- atom
- cell
-dust particle
- ping pong ball
atom
cell
dust particle
ant
ping pong ball
Copper (Cu)
Silver (Ag)
Gold (Au)
are three elements group together. They are also called coinage metals. Why do you think that is?
They are used for coins;
metals are not too heavy;
they do not tarnish easily;
they are easy to mold or print;
easy to find
Cu is the chemical symbol for the element _________
Copper
Li is the chemical symbol for the element _________
Lithium
Ni is the chemical symbol for the element _________
Nickel
O is the chemical symbol for the element _________
Oxygen
Pd is the chemical symbol for the element _________
Palladium
Po on the periodic table is also known as
Polonium
Pt is the chemical symbol for the element _________
Platinum
S is the chemical symbol for the element _________
Sulfur
Zn is the chemical symbol for the element _________
Zinc
Look closely at the location of each of these elements on the periodic table. Make a prediction: which elements have similar properties to each other and why?
Ni, Pd and Pt are in the same column or group on the periodic table so they will have similar properties to each other. O, S, and Po are also three elements in the same column or group on the periodic table, so they will likely have similar properties to each other though different from Ni, Pd, and Pt.
Draw the chemical symbol for Iron. What does the number on top mean
The number on top of the chemical symbol is the atomic number; the number of protons and number of electrons
What does the number on the bottom of a chemical symbol mean
Atomic mass
It is the basic unit of an element
atom
an atom is made of p_________, n_______ and e__________
protons, neutrons and electrons
Two or more atoms bonded together.
molecule
part of the atom that are positively charged located at the center of the atom
protons
part of the atom that don’t have a charge located at the center of the atom
neutrons
all matter is made up of atoms - T or F
True
part of the atom that are negatively charged and orbits the nucleus
electron
Protons and neutrons that clump together at the center of the atom is called a
nucleus
We can use a chart called the ___________________ to find information about all
the elements.
periodic table
Pure substances made of only one type of atom.
Element
An abbreviation for the name of an element on the periodic table.
Atomic Symbol
Elements that are good conductors of electricity and thermal energy and are often solid at room temperature.
Metals
The pattern in which elements are arranged on the periodic table helps scientists categorize them based on properties and reactivity. True or False
True
Where are protons and neutrons located in an atom?
In the center
Give three examples of properties of elements.
Which two subatomic particles make up the nucleus of an atom?
protons and neutrons
Draw a model of an atom and label the 3 different subatomic particles
Draw it
What is a PURE substance?
made up of only one atom; Pure substance are also known as element
