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Joy
Study cards
| Question | Answer |
|---|---|
| STATES OF MATTER | All living things living and nonliving anything taking up space and has a mass. Mass is the amount of matter in an object and weight is the gravitaional force. |
| Define energy | The ability to do work |
| Define and expain the two types of energy | Kinetic movement of an object. Potential energy is stored energy. |
| Define the forms of energy. | Mechanical energy: resulting form the position or movement of the body.Chemical energy:is a form of stored energy |
| Whenever energy is transformed, what is lost? | Heat is given off |
| What is the orbital model of atomic structure? | Is the model of electrons in an atom. |
| Atomic number is equal to the number of? | Protons |
| Atomic Mass represents what? | Number of protons plus nuetrons |
| What makes an isotope? | An element that has the same number of protons but different number of nuetrons. Same atomic numbers but different mass numbers. |
| Differentiate between an element and a compound. | An element is the simplest type of matter with unique chemical and physical properties. A compound is two elements together. |
| Differentiate between an atom and a molecule and a compound. | Atom is the smallest particle of an element that has the characteristics of that element. A molecule is when two or more atoms combine. Compound is two or more different atoms combined. |
| What are the parts of a solution? | Solution are described in which one substance is dissolving in another: The solute dissolves in the solvent. |
| What is the universal solvent? | H2O |
| Name three types of chemical bonds, and what makes each of these bonds. | Ionic,Covalent, and Hydrogen Bond.Ionic-weak When a ion loses an electronColvalent-sharing electrons When atoms share more than one electronHydrogen Bond-weak bond Is formed when positive end of one polar molecule is weakly attracted to negative end |
| What is the difference between a polar and nonpolar molecules give examples. | Polar when electrons are shared unequally(water molecules)Non-polar when electrons are share equally between atoms(hydrogen molecules oxygen) |
| When does a chemical reaction occur? | A chemical reaction occurs when a chemical reaction is changed by forming and breaking chemical bonds. |
| What happens when chemical equilibruim is reached? | The amount of the reactants relative to the amount of products remain certain. |
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