Flashcards
Module 2.1: Atoms
Flashcards do conjunto (17)
- 1Q1: What are atoms?A:The smallest particle of a chemical element that can exist.
- 2Q2: How many types of atoms exist?A: 118 known types.
- 3Q3: How many atoms are made in laboratories?A: 20 atoms.
- 4Q4: How many atoms are natural?A: 98 atoms.
- 5Q5: What is a crystal lattice?A: The symmetrical three-dimensional arrangement of atoms inside a crystal.
- 6Q6: What is a element?A: A substance made up of one atom.
- 7Q7: What is a cation?A: An ion that has fewer electrons than protons and is positively charged.
- 8Q8: What is an anion?A: An ion that has more electrons than protons and is negatively charged.
- 9Q9: What is a subatomic particle?A: The particles an atom is made up of protons, neutrons and electrons.
- 10Q10: What is a proton?A: a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron.
- 11Q11: What is a neutron?A: a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
- 12Q12: What is an electron?A: A small negatively charged particle ; clouds of electrons surround the nucleus of an atom.
- 13Q13: What is the force that attracts electrons to the nucleus?A: Electrostatic attraction
- 14Q14: What is the force that makes protons repel each other?A: Electrostatic repulsion
- 15Q15: What is the force that holds protons together in the nucleus?A: Nuclear force
- 16Q16: What is an atomic number?A: The number of protons in a nucleus; the atomic number determines what type of atom it is.
- 17Q17: What is a mass number?A: The number of protons and neutrons in an atom.
Informações
- Descrição
- Year 9 Sciences FlashCards sobre Module 2.1: Atoms, criado por Asiya Mohamed Farah em 06-05-2018.
- Criado por
- Asiya Mohamed Farah · mai 2018
- Atualizado
- 6 mai 2018
- Visualizações
- 0
- Histórico
-
- Criado por Addna Dahir · 2 mai 2018
- Copiado por Asiya Mohamed Farah · 6 mai 2018
- Avaliação