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Chapter 2 Matter
| Question | Answer |
|---|---|
| This is anything that has mass and takes up space. | Matter |
| Matter is made up of tiny particles called this? | Atoms |
| These are substances that are made of only one type of atom and cannot be broken down into simpler substances by normal chemical or physical means. | Elements |
| These are particles that have a positive electric charge. | Protons |
| These have no electric charge. | Neutrons |
| These are particles with a negative charge. | Electrons |
| The number of protons in an atom is equal to the ___________________ of the element. | Atomic Number |
| The ________________of an atom is equal to the number of protons plus the number of neutrons. | Mass Number |
| Atoms of the same element that have different numberes of neutrons are called what? | Isotopes |
| A ________________________ contains atoms of more than one type of element that are chemically bonded together. | Compound |
| A group of atoms connected by covalent bonds are called_____________________. | Molecules |
| Electically charged atoms are called___________ | Ions |
| This is composed of two or more substances that are not chemically combined. | Mixture |
| The components of this mixture are not mixed together evenly and each component retains its own properties. | Heterogeneous mixture |
| The components of a _______________________________ are evenly mixed together. | Homogeneous mixture |
| Another name for a homogeneous mixture. | Solution |
| What was the name of the philosopher who proposed that matter is composed of small particles? | Democritus |
| The current model of an atom includes this: | Protons, neutrons, electrons |
| Where are the protons and neutrons founds? | Nucleus |
| Where are the electrons located? | Around the nucleus |
| The atomic number of an element equals what? | The number of protons in an atom |
| The mass number of an element equals what? | The number of protons plus the number of neutrons in an atom. |
| Name a common element found in many different solids, liquids, and gases. | Oxygen |
| How many naturally occuing elements are on Earth? | 90 |
| When the atoms of more than one element combine, what do they form? | Compound |
| A property that describes a change that occurs when one substance reacts with another is called... | Chemical Property |
| The forces that hold the atoms together in compounds are called________________________ | Chemical Bonds |
| What kind of bond is found in metals such as copper, gold, aluminum, and silver? | Metallic Bonds |
| In this type of bond, electrons are free to move from one positively charged ion to another. | Metallic Bonds |
| What bonds can form without the interactions of electrons? | Hydrogen Bonds |
| What bonds are responsible for several properties of water? | Hydrogen Bonds |
| Atoms share electrons in what kind of bond? | Covalent Bonds |
| Atoms lose or gain electrons in this kind of bond. | Ionic Bond |
| Hydrogen bonds can form between what? | Polar molecules |
Created by:
summers0724
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