Atoms
the positively charged central core of an atom
Nucleus
Gold element is composed of ______ atoms.
gold
a system for arranging the chemical elements
The Periodic Table
affected by gravity
weight
Describe your water using its physical property
clear/color less
no taste
liquid
a very small particle that exists in the nucleus of every atom and has a positive charge of electricity
Proton
Other than its atomic name, elements in the periodic table is also represented by
atomic symbol
What is any horizontal row of elements on the periodic table?
Period
number/ amount of matter
mass
give an example of a physical property
color
size
texture
a very small particle that has a negative charge of electricity and travels around the nucleus of an atom
Electron
What does the number on top of the atomic symbol represent and called?
atomic number= number of protons
The columns form groups of elements that have similar chemical properties.
Groups are also known as Families
formula of density
density=mass/volume
Give an example of chemical property
flammability
reaction to oxygen
a subatomic particle of about the same mass as a proton but without an electric charge
Neutron
elements in the periodic table can be grouped into 3 main categories
Metal, Metalloids, Nonmetal
atomic mass, atomic number, and property.
What is the density of an object with a mass of 40grams and volume of 10cm3?
4g/cm3
ice melting
physical property
What is the sum of an atom's protons and neutrons called?
Atomic Mass
Describe the relationship between atoms and elements.
An element is made up of 1 type of atoms.
Why do silver and copper have similar properties?
Both are in the group.
What will happen to the mass of a person as he or she goes to space?
no change
Give an example of physical or chemical property that can be used to identify matter.
density