What is liquid?
What is a chemical change?
What are SI Units?
The number with 6 significant figures
This person created the periodic table
Dmitri Mendeleev
Makes a substance unique, a specific characteristic.
What are properties?
Your coffee cools down and then you heat it back up in the microwave. Physical or chemical?
Physical
mass (kg), length (m), time (s), temperature (K), luminous intensity (cd), amount of substance (mol), and electric current (A)
How many significant figures are in 0.0003120
Why do we use scientific notation?
It makes it easier to write super small or large numbers
This state of matter does not have a surface.
What is a gas?
Can you reverse a physical change?
In descending order, list the Common Decimal Prefixes that are used with SI Units
mega > kilo > deci > centi > mili > micro > nano > pico
How many significant figurers are in 10100
3
What is 10999201.3 in scientific notation with 4 significant figures?
1.100 x 10^7
Chemical!
Convert 23 degrees Celsius into Kelvin. Then, convert that number into Fahrenheit.
296.15 K
73.4 degrees F
7
You are making 6 batches of cupcakes. For each batch, you put in 1/4 cup of sugar instead of the required 1/2 cup. What type of error?
Systemic Error
Substance dissolved in water
You eat the cake. Physical or chemical change?
Chemical via digestion
What is the difference between temperature and heat?
Heat is transfer of thermal energy (higher to lower T), temperature is the average kinetic energy of the atom in a substance
8.56/2.333 = ?
1011. + 2.000 = ?
2.56 x 0.00012 = ?
3.67
1013
0.00031
What cannot be created nor destroyed? What is only converted from one form into another?
Energy!