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2. Atoms and the Periodic Table

Subatomic Particles (Simplified)

2. Atoms and the Periodic Table

Subatomic Particles (Simplified)

Multiple Choice
According to the table above, how many electrons are needed to have a combined mass of 1.0465 x 10^-25 kg?
Multiple Choice
How many atoms are contained in 0.230 g of sodium, Na? The mass of one sodium atom is 23.99 amu.
Open Question
Identify each of the following as describing either a proton, a neutron, or an electron:a. has the smallest mass
Open Question
Is each of the following statements true or false?c. Neutrons repel each other.
Open Question
Would you use the atomic number, mass number, or both to determine each of the following?d. number of electrons in a neutral atom
Open Question
Would you use the atomic number, mass number, or both to determine each of the following?c. number of particles in the nucleus
Open Question
How many protons and electrons are there in a neutral atom of each of the following elements?a. argon
Open Question
Which statements completed with a to e will be true and which will be false? An atom of N compared to an atom of Li has a larger (greater)c. number of protons
Open Question
Match the subatomic particles (1 to 3) to each of the descriptions below: (4.4) 1. protons2. neutrons3. electronsb. surround the nucleus
Open Question
Indicate if each of the following statements is true or false: (4.3)c. The atomic mass unit is based on a carbon atom with six protons and six neutrons.
Open Question
Indicate if each of the following statements is true or false: (4.3)d. The proton and the electron have about the same mass.