Unit systems & Conversions
What is SI?
80200 in 3 significant figures is _________.
8.02E4
Density equals ________.
What is Mass/Volume?
The equipment you need is listed under what section of a lab report?
What is materials?
There are _____ types of variables
3
The three words that can be used as base in metric conversions.
What are meter, liter, gram?
A digital scale says that my keys weigh 143.24 grams, in my report I write this number as _________ grams.
What is 143.24?
2 Examples of units for Density.
What is g/cm^3 and g/ml?
The analysis section is made up of at least two things, Calculations and _________________.
What is Sources of Error?
The variable that refers to the things that stay the same during an experiment and every repetition of it.
What is Controlled/Constant?
Going from a larger to a smaller prefix, the decimal point shifts to the _______.
What is right?
92/13.1 = _______
remember to note the right number of sig figs.
7.02
A gold bowling ball and a pink bowling ball have the same volume. The mass of the pink ball is smaller. The denser ball is the ______ one.
What is Gold?
The first thing you do when trying to conduct an experiment. Determine a ________.
What is a purpose?
If Simran is learning about how temperature affects the melting speed of an ice cube, her controlled variables include -
What is the type of water/ice? What is the initial size of the ice cube?
Converting from centigrams to hectograms, hop the decimal point ___ times.
4
0.0399 in 2 significant figures is ________.
0.040
If the volume is 14cm^3 and the density is 0.5 g/cm^3
The mass is ___________.
What is 7g?
The most important part about being in a lab/conducting an experiment.
What is Safety?
If Janet throws a ball from 2ft, 3ft, and 4ft heights, and she measures the height that the ball bounces back up to, what is/are the independent variable(s)?
What are initial heights?
What are 2ft, 3ft, 4ft?
0.042 decaliter = _________ deciliter
4.2 deciliters
A ruler has 4 deviations between the numbers 1 and 2 on it. A hair clip is placed with one end at 0. The other end lines up with the third deviation between 1 and 2.
The length of the hair clip is ________.
1.6
The new Iphone weighs 25% less than the old iphone, but has the same volume. The density of the new Iphone is ___________ than the density of the old Iphone.
What is less?
Emmett wants to find out whether stirring their protein powder will make it dissolve faster. What is the purpose of their experiment? (Remember purpose is a statement, not a question).
To find a relationship between stirring dissolving speed.
At a time (in 1 experiment), you can change ___ variable(s). All others remain constant.
1