4239584
| Question | Answer |
| What are the units for resistance? | Ohms |
| What are the units for current? | A |
| What is the definition of resistance? | Resistance is the measure of how much a material prevents current from flowing through. |
| What is the equation for energy (J) in a circuit? | E = V x Q |
| What is the equation for potential difference in a circuit? | V = W / Q |
| What is the definition of a 'total voltage'? | A total voltage is the voltage of all cells and barreries on a circuit added together. |
| What does an ammeter do? | An ammeter measures the current in a circuit. |
| What does a voltmeter do? | A voltmeter measures the voltage in a circuit. |
| What does covalent bonding happen between? | Covalent bonding happens between 2 non-metals. |
| What do most ionicly bonded materials have in common? | Most ionicly bonded materials can dissolve in water. |
| What are most covalently bonded materials not able to do? | Most covalently bonded materials cannot dissolve in water. |
| What does 'HDPE' stand for? | High-density polyethene. |
| What does 'LDPE' stand for? | Low-density polyethene. |
| What type of atmosphere are LDPEs made in? | In a high pressure, low oxygen, environment. |
| What catalyst is used to align the ethene molecules as they join in HDPE? | A titanium catalyst is used. |
| What is a polymer made up of? | A polymer is made up of lots of monomers. |
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