The fire emoji represents a streak. A streak in snapchat is defined as three days in a row in which you and a friend snap eachother. The number next to the streak tells you how many consecutive days you and a friend have snapped eachother. The fire emoji streak will appear when you have snapped three days in a row. Once you have started a streak the goal is to keep the streak alive for as long as possible.
In an atom of gold, there are 79 protons and 79 electrons. The number of neutrons for gold may vary by isotope. In an atom of gold, there are 79 protons and 79 electrons. The number of neutrons for gold may vary by isotope.
Each isotope of an element has the same atomic number, but a different atomic mass. In carbon, 99 percent of the atoms are isotope carbon 12, and 1 percent are carbon 13. Both isotopes have six protons, but carbon 12 has six neutrons, while carbon 13 has seven. substance made up of one kind of atom is an element. Gold is an element because it only contains gold atoms. Water is not an element because it contains hydrogen and oxygen atoms. Scientists list the elements by atomic number in the PERIODIC TABLE.