36983220
Description
Flashcards by Emma Antunis, updated more than 1 year ago
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Created by Emma Antunis
over 2 years ago
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| Question | Answer |
| How is the Periodic Table arranged? | The periodic table is arranged by atomic weight and valence electrons |
| What are the 3 elements on the periodic table? | 1. Metals 2. Non-metals 3. Metalloids |
| What is an atomic number? | The number of protons in the nucleus of an atom |
| What is the mass number of an element? | To plus the number of protons and neutrons to get the mass number |
| What are Protons? | Protons are subatomic particles found in a nucleus atom, it has a positive charge, equal to and opposite of an electron. |
| What are Neutrons? | A neutron is a subatomic particle found in the nucleus of every atom. Neutrons have no electrical charge. |
| What are Electrons? | An electron is a negatively charged subatomic particle. It can be either free not attached to any atom or bound to the nucleus of an atom. |
| How many electrons are in an electron shell? | The first shell (closest to the nucleus) can hold two electrons. The second shell can hold 8 electrons. The third shell can hold 32 electrons |
| How are electrons arranged in atoms? | The electrons in an atom are arranged in shells that surround the nucleus, with each successive shell being farther from the nucleus |
| What is a chemical reaction? | A chemical reaction is an exchange of atoms and when a chemical change occurs. |
| What is a physical-chemical change? | Examples of physical change are freezing of water, melting of wax, boiling of water |
| What is a chemical change? | Examples of chemical changes are burning, cooking, rusting, and rotting |
| What are reactants in a Chemical reaction? | The substances that go into a chemical reaction are called the reactants |
| What are the products of a chemical reaction? | The substances produced at the end of the reaction are known as the products. |
| What's the Law of Conservation Mass? | The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed. |
| How are ions formed to create stable atoms? | Ions are charged substances that have formed through the gain or loss of electrons. |
| What are cations? | Cations form from the loss of electrons and have a positive charge. |
| What are anions? | anions form through the gain of electrons and have a negative charge. |
| How are anions and cations different due to their properties? | Cations are positively charged and Anions are negatively charged. |
| What are isotopes? | Isotopes are atoms with the same number of protons but that have a different number of neutron |
| what is the different form of an isotope with fewer neutrons in its atom? | Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons |
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