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Biology section 2
| Question | Answer |
|---|---|
| Atomic number= | number of protons |
| Number of protons= | number of electrons |
| Mass nuber-number of protons= | number of neutrons |
| Atoms are... | electically neutral |
| A solution that is more H+ than OH- is an... | acid |
| The nucleus contains protons and... | neutrons |
| One substance evenly dispersed in another is called a... | solution |
| What is the range of the pH scale? | 1-14 |
| The amount of energy needed to start a chemical reaction is __________ energy | activation |
| The greater part of the solution is called the... | solvent |
| If a solution has a pH of 4 is it an acid or a base? | acid |
| Which is the stronger base,10 or 12? | 12 |
| Carbon has how many protons? | 6 |
| Carbon has how many neutrons? | 6 |
| Carbon has how many electrons? | 6 |
| What is carbons atomic number? | 6 |
| What is carbons atomic mass#? | 12.011 |
| What is carbons mass#? | 12 |
| List 2 types of bonds | covalent and ionic bonds |
| List 3 subatomic particles and there charges. | neutron-nuetral proton-positive elcetron-negative |
| 2 or more elements combinedform a... | compound |
| The solventis usually the compound... | water |
| A universal solvent is... | H2O |
| List the 3 states of matter. | solid, liquid, and gas |
| The ________ are shown on the right side of an equation. | products |
| Enzymes act as _________ that speed up the reaction but does not change it. | catalysts |
| Chemical reactions that involve a net release of energy is an _________ reaction. | energetic |
| _________ reactions involve a net absorption of energy. | endogenic |
| A neutral solution has a pH of... | 7 |
| Define solute | part that is dissolved by the solvent |
| Anything that has mass and occupies space is called... | matter |
| ____ is the quantity of matter an objest has | mass |
| Bases have more ___ ions than hydrogen ions | OH- |
| ________ are pure substances that cannot be broken down chemically into simpler kinds of matter | elements |
| The simplest part of a substances that retains all of the properties of the substance and that can exist in a free state is a ____ | atom |
| The ________ are shown in the left side of a chemical equation. | reactants |
| which element is more stable, Na or Ne? Why? | Ne, it's a noble gas and all of its orbits are filled |
| _______ neutralize small amounts of acids or bases. | Buffers |
| Where are electrons found in an atom? | In the electron cloud |
| An _________ reaction is where an atom loses an electron to become positively charged. | oxidation |
| A _________ reaction is where an atom gains an electron to become negatively charged | reduction |
| ________ have the same number of protons but different nubers of neutrons. | isotopes |
| The ability to do work is _______. | energy |
| The bond between water molecules is called a ________ bond | hydrogen |
| Water adheres to a penny due to the attractive force between two particles of different of different substances called ________ | adhesion |
| The attractive force that holds water molecules or other like substances together is called _____________ | hydrogen bond |
| Explain how capillary benefits a plant. | It's what takes al of the neutrients throughout the plant, and it's like our muscles in our intestienes when it moves food along. |
Created by:
jawilliamson3
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