QUESTION IMAGE
Question
part 1: atom screen
- which particle(s) are found in the center of the atom?
- which particle(s) are found on the outside of the atom?
- build the following atoms and type the name of each element you built.
a. an atom with 3 protons and 4 neutrons;
b. an atom with 2 protons and 4 neutrons;
c. an atom with 4 protons and 4 neutrons;
- which particle(s) determine the name of the element you build?
directions: click on the green (+) button next to
et charge\. play with the simulation to discover which particles affect the charge of an atom or ion. then fill in the blanks below.
- ions are just atoms with a net charge. fill in the blanks below to show your understanding of net charges:
a. positive ions have protons than electrons.
b. negative ions have protons than electrons.
c. neutral ions have protons and electrons.
directions: click on the green (+) button next to \mass number\. play with the simulation to discover which particles affect the mass of an atom.
- how is the mass of an atom calculated?
Question 1
In an atom, the center (nucleus) contains protons (positively charged) and neutrons (neutral). Electrons are outside. So protons and neutrons are in the nucleus (center).
Electrons are negatively charged particles that orbit the nucleus in electron clouds or shells, which are outside the atomic nucleus.
The number of protons determines the element (atomic number = 3). Element with 3 protons is lithium. Neutrons add to mass but not identity. So 3 protons → lithium.
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Protons and neutrons