periodic table Flashcards
How can you distinguish between atoms of different elements?
Atoms of different elements can be distinguished by their number of protons, neutrons, and electrons. For example, hydrogen has 1 proton, carbon has 6 protons, and oxygen has 8 protons.
How are elements organized in the Periodic Table?
Elements are organized in the Periodic Table by their atomic number, which is the number of protons in the nucleus of an atom.
What is an atom and how is it represented?How do the properties of elements relate to their position in the Periodic Table?
The properties of elements, eg reactivity and state (metal, non-metal), are related to their position in the Periodic Table. eg elements in the same group (column) often have similar chemical properties.
How can the Periodic Table be used to predict the properties of elements?
you can predict properties like its reactivity, metallic or non-metallic behavior, and whether it is a solid, liquid, or gas at room temperature.
How did creativity and logical reasoning contribute to the development of the modern Periodic Table?
Scientists like Dmitri Mendeleev used creativity, logical reasoning, and available scientific evidence to organize elements into the modern Periodic Table, leaving gaps for elements that had not yet been discovered.
How are electrons arranged in atoms?
Electrons are arranged in energy levels (or shells) around the nucleus. The first shell can hold up to 2 electrons, the second up to 8, and the third up to 18 electrons.
What is the significance of atomic number in determining an element’s identity?
the atomic number, which equals the number of protons in an atom, uniquely identifies an element and determines its place on the Periodic Table.
