Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
104 Cards in this Set
- Front
- Back
Chemistry |
Study of composition, structure, properties & reactions of matter. Science that studies composition of substances & the way they interact with other substances. Matt |
|
Matter |
Things you can feel, touch, experience. Takes up space and has mass. |
|
Mass |
How much matter there is (grams, kilograms) |
|
Volume |
How much space the stuff takes up (gallon, liter, cm3) |
|
Scientific method |
Observation Hypothesis Experiment Conclusion |
|
Observation |
What you see, what happens, what you record |
|
Base quantity- Fundamental Unit: length |
Meter |
|
Base quantity- Fundamental Unit: Mass |
Kilogram |
|
Base quantity: volume |
Liter |
|
Base quantity- Fundamental Unit: time |
Second |
|
Base quantity- Fundamental Unit: temperature |
Kelvin |
|
Addition/Subtraction Rule: SigFigs |
Use the least number of DECIMAL PLACES found in the data |
|
Multiplication/Division:SigFigs |
Same # of sig figs as entry with fewest sig figs |
|
Delivered Units: Area |
Length squared, m2 |
|
Delivered Units: Volume |
Length cubed, m3, 1 liter (L) |
|
Delivered Units: Density |
Mass —————- Volume Common unit:kg/m3 |
|
Delivered Units: speed |
Distance/time Common unit m/s |
|
Delivered Units: energy |
Joule (j) |
|
Conversions: Celsius to Kelvin |
K=c• + 273.15 |
|
Conversions: Celsius to Kelvin |
K=c• + 273.15 |
|
Conversions: Celsius to Fahrenheit |
•F= 9/5 •C + 32 |
|
Conversion: Calorie:Joule |
1 calorie=4.184 J |
|
Conversion: kg-lb |
1kg=2.2 lb |
|
Conversion: kg-lb |
1kg=2.2 lb |
|
Conversion: meter to yard |
1 meter= 1.1 yard |
|
Conversion: Quart to Liter |
1 qt =0.9464L |
|
Synthesis reaction |
Two substances form a new substance |
|
Synthesis reaction |
Two substances form a new substance |
|
2Na + Cl2 -> 2NaCl |
Synthesis, Combination reaction |
|
Decomposition Reaction |
One substance yields two or more substances |
|
2HgO -> 2Hg+O2 |
Decomposition Reaction |
|
Formula calc Density |
D=M/V |
|
Kilo |
10^3 1,0000 |
|
Kilo |
10^3 1,0000 |
|
Hecto |
10^2 100 |
|
Kilo |
10^3 1,0000 |
|
Hecto |
10^2 100 |
|
Deka |
10^1 10
|
|
Kilo |
10^3 1,0000 |
|
Hecto |
10^2 100 |
|
Deka |
10^1 10
|
|
Deci |
10^-1 0.1 |
|
Kilo |
10^3 1,0000 |
|
Hecto |
10^2 100 |
|
Deka |
10^1 10
|
|
Deci |
10^-1 0.1 |
|
Centi |
10^-2 0.01 |
|
Kilo |
10^3 1,0000 |
|
Hecto |
10^2 100 |
|
Deka |
10^1 10
|
|
Deci |
10^-1 0.1 |
|
Centi |
10^-2 0.01 |
|
Milli |
10^-3 0.001 |
|
King Henry Died Unexpectedly Drinking Chocolate Milk |
Kilo hecto deka unit base Deci Centi Milli |
|
Scientific notation values |
Negative means less than 1 multiply by decimal points to the right or left |
|
For an experiment to be valid, you must have what two groups? |
Control and experimental |
|
The standard unit for length is |
Meter |
|
The standard unit for length is |
Meter |
|
Volume of a cylinder! |
Back (Definition) |
|
Which event occurs first in the scientific method? |
Make an observation |
|
Determine the number of significant figures in 10.050 mL |
5 |
|
Which of the following is a prefix that makes the base unit larger? Kilo- Deci- Milli- Centi- |
Kilo |
|
Round 0.03559 to 3 sig figs |
0.0356 |
|
4,503,000,000 in scientific notation |
4.503 x 10^9 |
|
The SI unit for mass is |
Kilogram |
|
95200/85.258 w/ correct sig figs |
1120 |
|
A student is using a ruler that measures to the ones place. To what place will the student’s measurement be recorded? |
Tenths place- |
|
Law of conservation of matter |
Mass is neither created or destroyed during physical or chemical changes. Same is true for matter. |
|
Which of the following is a prefix that makes the unit smaller? |
Deci/Centi/Milli/ |
|
What is the unit used for luminous intensity? |
Candela |
|
How many calories are in 349J |
1cal=4.184 J 349jX 1cal/4.184J=83.4 cal |
|
Pure substances include |
Elements & compounds |
|
Homogeneous mixture |
Same throughout eyedrops, etc |
|
Homogeneous mixture |
Same throughout eyedrops, etc |
|
Heterogeneous mixture |
Sand, pizza, rocky road ice cream, wood |
|
Convert 75F to C |
K=C +273 F=1.8(c) +32 24C |
|
Convert 75F to C |
K=C +273 F=1.8(c) +32 24C |
|
Kinetic energy |
Is carried by objects in motion |
|
Convert 75F to C |
K=C +273 F=1.8(c) +32 24C |
|
Kinetic energy |
Is carried by objects in motion |
|
Chemical energy |
Idk |
|
Sodium chloride |
Compound |
|
Sodium chloride |
Compound |
|
Ammonia |
Compound |
|
Molecules in this state of matter completely fill the container they’re in. |
Gas |
|
Chemical change |
Fundamental co position of the substance is changed |
|
Chemical change |
Fundamental co position of the substance is changed fire burns the wick, chemical co2 & h2o released into the air |
|
Physical change |
Physical change, not chemical substance retains original composition wax melts candle, physical change. |
|
Change in state |
Melting, freezing, subliming |
|
What does the mass number represent? |
Total # of neutrons and protons |
|
Atomic number |
Number of protons |
|
Mass number |
Number of protons and neutrons in an atom |
|
Isotopes |
Atoms of the same element that have the same number of protons but different # of neutrons |
|
Calculate atomic mass of an element using isotopes |
Multiply mass of each isotope by its percent abundance Add results to give weighted average atomic mass of element |
|
Periods |
Horizontal rows |
|
How many periods are on the periodic table |
7 |
|
Groups |
Vertical columns |
|
Tall groups |
Representative elements Main group elements |
|
B groups |
Transition metals |
|
Metalloids |
Make a stair step line Exhibit properties of metals and non metals Better conductors of heat and electricity than non metals |
|
Nonmetals |
No luster Not ductile Not malleable Not good conductors of electricity |
|
Properties of Metals |
Luster (shininess) Ductile Malleable All but Mercury are solid at room temp Good conductor of electricity |
|
Valence electrons |
Electrons in the outermost energy level of the atom |
|
Valence electrons in groups |
Group 1A-1 valence electron 2A- 2 valence electrons 3A- 3 valence electrons |