Sig Figs/ Scientific Notation
Properties of Matter
Accuracy and Precision
Matter
Ms. Molina Trivia
100
When writing scientific notation, what is my base number?
x 10 n
100
Boiling point, melting point, and density are all examples of ____________.
intensive properties
100
Write down the definition of accuracy.
Accuracy is how close a measurement is to the true or accepted value.
100
What are the 3 states of matter?
Solid, liquid, and gas
100
What school did Ms. Molina teach at last year?
Elsik
200
Why do we write numbers in scientific notation?
To simplify it.
200
All chemical properties are going to be __________ (intensive or extensive).
intensive
200
Write the definition of precision.
Precision is how close the measurements are to one another.
200
What are the two classifications of matter?
Pure Substance and Mixtures
200
What sport does Ms. Molina coach?
Tennis
300
Calculate the number of sig figs in the following number:
0.0201
3 sig figs
300
List 3 types of chemical properties.
flammability, reactivity, toxicity, sensitivity to heat/light, etc.
300
Ms. Molina was trying to do an experiment to calculate the density of aluminum (2.7 g/mL). Based on her results, was she accurate, precise, both, or neither?
2.924, 2.923, 2.925, 2.926
precise - values are closer to 3 g/mL instead of 2.7 g/mL
300
Where can I find my elements? Give 3 examples of an element.
Periodic table; answers will vary.
300
What college did Ms. Molina attend?
University of St. Thomas
400
Change the following number from standard notation to scientific notation:
45,400
4.54 x 10 4
400
List the following 3 pictures as physical or chemical changes.
physical, chemical, chemical
400
Which of the following pictures shows low accuracy but high precision?
B
400
True or false, if false, please correct the statement: Homogeneous mixtures allow you to see the individual parts and heterogeneous mixtures are the same throughout.
False, homogeneous mixtures are uniform throughout and heterogeneous mixtures are different throughout.
400
What country is Ms. Molina's family from?
Bolivia
500
Write the following number in standard form AND list the number of sig figs.
6.77 x 10-2
0.0677
3 sig figs
500
Give an example of a physical property, physical change, chemical property and chemical change.
Physical property: color, mass, volume, length, density, MP, BP, etc.
Chemical property: reactivity, flammability, toxicity, acidity, sensitive to light/heat, etc.
Physical change: paper ripping, wood being chopped, viscosity, ice cream melting
Chemical change: burning wood, baking a cake, milk turning sour, fireworks, digestion, etc.
500
Draw a picture of a target that is accurate but NOT precise. Show at least 5 targets.
500
Label the following as either an element, compound, or a mixture:
helium, olive oil, air, vitamin C
element, mixture, mixture, compound
500
What is Ms. Molina's favorite sports team?
Astros