a. Gizmo Warm-Up
1. The particles located in the nucleus are protons and neutrons. The particles orbiting around the nucleus are called electrons.
2. What causes the element name to change? a. adding protons
Question: What are the properties of protons, neutrons, and electrons?
Atoms are made of extremely tiny particles called protons, neutrons, and electrons. Protons and neutrons are in the center of the atom, making up the nucleus. The charge on the proton and electron are exactly the same size but opposite.
Investigate:
Which number is equal to the number of protons in the atom? Atomic Number
How can you calculate the number of neutrons (N) in an atom?
Subtract the Atomic Number from the Atomic Mass
Which particle (proton, neutron, or electron) has a positive charge? Proton
Negative charge: Electron
No charge at all: Neutron
Question: How are electrons arranged around the nucleus of an atom?
The electrons orbit the nucleus of an atom.
How are the electrons arranged for a hydrogen atom?
The electrons are in a line formation for a hydrogen atom.
How many electrons can fit in the first energy level? 2
How many electrons can fit in the second energy level? 8
How many electrons fit in the part of the third energy level shown? 18
How many valence electrons are in a neutral lithium atom?
Which element has similar properties to lithium? Sodium
Beryllium? Calcium
1. The particles located in the nucleus are protons and neutrons. The particles orbiting around the nucleus are called electrons.
2. What causes the element name to change? a. adding protons
Question: What are the properties of protons, neutrons, and electrons?
Atoms are made of extremely tiny particles called protons, neutrons, and electrons. Protons and neutrons are in the center of the atom, making up the nucleus. The charge on the proton and electron are exactly the same size but opposite.
Investigate:
Which number is equal to the number of protons in the atom? Atomic Number
How can you calculate the number of neutrons (N) in an atom?
Subtract the Atomic Number from the Atomic Mass
Which particle (proton, neutron, or electron) has a positive charge? Proton
Negative charge: Electron
No charge at all: Neutron
Question: How are electrons arranged around the nucleus of an atom?
The electrons orbit the nucleus of an atom.
How are the electrons arranged for a hydrogen atom?
The electrons are in a line formation for a hydrogen atom.
How many electrons can fit in the first energy level? 2
How many electrons can fit in the second energy level? 8
How many electrons fit in the part of the third energy level shown? 18
How many valence electrons are in a neutral lithium atom?
Which element has similar properties to lithium? Sodium
Beryllium? Calcium