When converting a number larger than 10 to scientific notation, the exponent will always have this sign
What is positive
100
When making any measurement, there will always be some amount of this.
What is uncertainty?
100
1 mile is equal to this many feet
What is 5280
100
This kind of substance is made of the exact same particles ( either elements or compounds)
What is a pure substance
100
These types of changes do not affect the composition of a substance.
What is physical change
200
In scientific notation, there is always this many digits in front of the decimal place
What is 1?
200
When counting significant figures, these zeroes only get counted as significant figures when accompanied by a decimal point.
What is trailing zeroes (right side)
200
1 kg is equal to this many pounds
What is 2.2064
200
When you combine more than one pure substance you get one of these
What is a mixture
200
A chemical change can also be referred to as one of these
What is a reaction
300
The number 3*10^5 in standard notation will have this many zeroes
What is 5
300
These zeroes never get counted as significant figures.
What is leading zeroes ( left side)
300
10 km is equal to this many miles
What is 6.213
300
If a mixture is so thoroughly mixed that the composition remains constant everywhere in the mixture, you are dealing with this kind of mixture
What is homogeneous
300
When an substance changes from a solid to liquid form, this is considered this kind of change because the molecules are still the same.
What is a physical change
400
When 4.232 * 10^-8 is evaluated in standard notation, there will be this many zeroes between the decimal and the first digit (4)
What is seven
400
When adding significant figures, you round to this place based on the numbers you added
What is the last common decimal place? Answers may vary
400
100 degrees celcius is this when measured in ferenheit
What is 212
400
Oil and water don't mix well. If you try to combine them you will get this kind of mixture
What is heterogeneous
400
Whenever a new substance is formed, this kind of change has taken place.
What is chemical change
500
This is the number .000211 in scientific notation
What is 2.11*10^-4
500
When multiplying or dividing a numbers with 3,4,2,7,8, and 5 significant figures, the answer must have this many significant figures
What is 2
500
This is the only temperature that is the same in celcius and ferenheit scales
What is -40
500
Hydrogen and oxygen form together to make water molecules therefore a sample of water is considered this: (mixture, solution, homogeneous, pure substance, hetero,,,,etc etc)
What is a pure substance
500
When a mixture is made. It is considered this kind of change