Chapter 3 - Atomic Structure And The Periodic Table Flashcards
1
Q
What is in the nucleus of an atom?
A
Neutrons and protons.
Together they are called nucleons.
2
Q
Nucleon number is __________
A
Total number of protons and neutrons.
3
Q
By what are the elements in the periodic table organised?
A
Increasing proton number
4
Q
What are isotopes?
A
Elements with same number of protons but different number of neutrons / elements with same proton number but different mass number.
5
Q
Some uses of radiation
A
- treating cancer
- used as medical tracers.
- used to detect leaks in oil and gas pipes
- used to sterilise food
6
Q
Electronic configuration
A
2,8,8,2 (for o level, only up to calcium)
7
Q
Rows in periodic table are called?
A
Periods ____
8
Q
Columns in periodic table are called?
A
Groups |
9
Q
Sub atomic particles
A
Protons ➕
Electrons ➖
Neutrons ➰ ( neutral )
