Density is the relationship between these two things
What is mass and volume
100
This many sig figs are needed in the final answer of this problem: 1.2455 x 37.654 x 400. = ?
What is 3, based off of the 400. Because the decimal makes the zeros significant.
100
Volume is defined as...
What is the amount of space an object occupies
100
In burning steel wool, the mass of the wool increased, decreased, or stayed the same and why?
What is increased because steel oxide was formed.
100
An object with .424 g/cm3 sink or float in water. Why?
What is float, because water has a density of 1g/cm3 and .424<1.
200
This represents density on a graph
What is slope
200
You look at this to determine how many sig figs are needed in addition/subtraction problems
What is the lowest number of decimal places
200
You look at this to measure the volume of a graduated cylinder
What is meniscus
200
Mass is or is not lost in a state change? (Example: Ice that melts to water.)
What is not lost. All the particles are present in both the solid and liquid.
200
The slope of a line on a graph is found by doing this.
What is rise/run
300
The equation for density is this
What is M/V
300
Give two of the three rules that make zeros significant in a value.
What is
1. zeros between numbers
2. zeros after the decimal
3. end of a number and before decimal
300
This is one way we discussed in class to find the volume of an irregular shaped object
What is water displacement
300
This happens to the mass of Alka-Seltzer and water after they are combined
What is the mass decreases because some of the mass is released as gas.
300
You calculate the volume of a cylinder using this equation
What is V=πr2h
400
Draw a particle diagram of a Coke (sinks in water) and Diet Coke (floats in water).
What is Coke should have more particles for the same amount of volume than diet coke
400
This final answer of the problem:
(.25 + 1.3) x 4.57 = ? will have this many sig figs
What is one. (in addition and subtraction you look to the fewest amount of decimal places)
400
Volume is often expressed in mL. This is another unit of measurement equivalent to this:
What is mL = cm3
400
Two balls (Ball A & B) have an equal volume, but Ball A has a greater density than Ball B, so Ball A has a greater than/Less than/ or equal mass to Ball B.
What is greater mass than Ball B
400
This amount of atoms make up the average adult body
What is 7 octillion atoms.
500
Draw a volume-mass graph that shows the relationship between a solid, liquid, and gas’s densities.
What is solids have the greatest density & gases have the lowest density
500
This is amount of sig figs should you have in a reading of a 100mL graduated cylinder
What is two or three. (One decimal is needed since you estimate one place past the smallest reading giving you two-three sig figs.)
500
You would do this to the volume of a gas if you wanted to decrease the gas’s density
What is increase the volume of the gas.
500
The “Law of Conservation" is defined as:
What is Mass can be neither created or destroyed.
500
The volume of a cube that weighs 40.0g and has a density of 19.3 g/cm3 is this value