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HSChemistry1stQtr
Chem Quests 1-9
| Question | Answer |
|---|---|
| Qualitative or Quantitative? The building is really tall. | Qualitative |
| Qualitative or Quantitative? It takes a long time for me to ride my bike to the store. | Qualitative |
| Qualitative or Quantitative? The river is 31.5 m deep. | Quantitative |
| Qualitative or Quantitative? I live really far away. | Qualitative |
| Qualitative or Quantitative? The cheese costs $4.25 per pound. | Quantitative |
| Qualitative or Quantitative? It is 75 degrees outside today. | Quantitative |
| What quantity is a meter (m)? | length |
| What quantity is a kilogram (kg)? | Mass |
| What quantity is a second (s)? | Time |
| What quantity is Kelvin (K)? | temperature |
| What quantity is Liter (L)? | Volume |
| What quantity is a mole (mol)? | Amount of substance |
| Mega (M) means.... | million |
| Kilo (k) means... | thousand |
| Deci (d) means... | tenth |
| Centi (c) means... | hundredth |
| Milli (m) means... | thousandth |
| Micro (ยต) | millionth |
| Nano (n) | billionth |
| Pico (p) | trillionth |
| One cm is equal to a) 0.001m b) 0.01m c) 1.0 m | 0.01m because one cm is "one hundredth of a meter" and 0l01 m is the expression for "one hundredth of a meter". |
| When you multiply two numbers in scientific notation, you must _____ their exponents. | add |
| When you divide two numbers, you must ________ the denominator's exponent from the numerator's exponent. | subtract |
| Scientific notation can be a nice way of getting rid of the unnecessary _____in a number. | zeroes |
| Zeroes at the beginning of a number are _______ significant. | never |
| Zeros that are between two nonzero numbers are ______ significant | always |
| 21,500 meters = ____kilometers | 21.5 kilometers |
| 0.00582 meters = ____millimeters | 5.82 millimeters |
| Zeros at the end of a number are not significant unless there is a _______ ______ in the number. | decimal point |
| How do you round a number? 1)Count the number of ______ figures in each number. | significant |
| How do you round a number? (continued) 2) Round your answer to the _____number of significant figures. | least |
| A chemical change is any alteration that changes the _____of matter. | identity |
| A physical change is any alteration that does not ____the identity of the matter. | change |
| A _______change is any alteration that does not change the identity of the matter. | physical |
| A _______change is any alteration that changes the identity of the matter | chemical |
| Burning a paper is a _________change. | chemical |
| Shredding paper is a ________ change. | physical |
| dissolving salt in water is a ______change. | physical (the salt and water are still there) |
| Passing electricity through water, changing it into hydrogen and oxygen is a _____change. | chemical |
| Is it an element or a compound? sodium (Na) | element |
| Is it an element or a compound? Water (h 20) | compound |
| Is it an element or a compound? Hydrogen Peroxide (H2 02) | compound |
| Is it an element or a compound? methane (C H4) | compound |
| Is it an element or a compound? carbon (c) | element |
| Is it an element or a compound? Oxygen (0) | element |
| Is it an element or a compound? sodium chloride (NaCl) | compound |
| Is it an element or a compound? carbon dioxide (C 02) | compound |
| Is it an element or a compound? chlorine (Cl) | element |
| Is it a pure substance or a mixture? sand | mixture |
| Is it a pure substance or a mixture? Kool-aid | mixture |
| Is it a pure substance or a mixture? salt | pure substance |
| Is it a pure substance or a mixture? Hydrogen and Oxygen | mixture |
| Is it a pure substance or a mixture? water | pure substance |
| Is it a pure substance or a mixture? aluminum | pure substance |
| Is it a pure substance or a mixture? carbon dioxide | pure substance |
| Is it a pure substance or a mixture? sodium and chlorine | mixture |
| Is it a pure substance or a mixture? salt water and sand | Mixture |
| Is it a pure substance or a mixture? hydrogen | pure substance |
| An element is... | one single thing |
| a compound is... | several different elements |
| a mixture is... | several different elements mixed together |
| a pure substance is... | the substance is made up of only one kind of particles, ie hydrogen or oxygen |
Created by:
margaretawarren
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