Lab 0/1/2

Question 1

what its considered safety lab attire?

Answer 1

closed toed shoes, eye protection, gloves, pants (not shorts), full covering shirts with sleeves, tied up hair and laboratory coats when instructed

Question 2

What are safety lab items/equipment?

Answer 2

first-aid kit, eyewash, gas shutoff, fire blanket, fire extinguisher

Question 3

rules to adding or subtracting scientific notation :

Answer 3

• convert all numbers to the same exponent before calculating
• add/subtract coefficients and leave the base and exponent the same!

Question 4

rules to multiplying in scientific notation :

Answer 4

• multiply the coefficients
• then add the exponents

Question 5

rules to divide with scientific notation :

Answer 5

• divide the coefficients
• then subtract the exponent of the divisor from the exponent of the dividend

Question 6

Multiply using scientific notation:

(3.0 x 10^12) x (6.0 x 10^3) = ?

Answer 6

answer: 1.8 x 10^16

Question 7

divide using scientific notation :

(7.64 x 10^-7) / (3.22 x 10^-4) = ?

Answer 7

answer: 2.37 x 10^-3

Question 8

add using scientific notation:

4.0 x 10^7 + 2.0 x 10^8 = ?

Answer 8

answer : 2.4 x 10^8

Question 9

subtract using scientific notation :

9.0 x 10^-5 - 6.10 x 10^-4 = ?

Answer 9

answer: -5.2 x 10^-4

Question 10

What is the conversion mnemonic?

Answer 10

King Henry Died Drinking Chocolate Milk Monday

Question 11

conversion mnemonic measurements are…

Answer 11

King - kilo (0.001 in 1m) (1000 m in 1 kilo)
Henry - hecto (0.01) (100)
Died - deca (0.1) (10)
Base unit - meter, gram, liter, etc (1) (1)
Drinking - deci (10) (0.1)
Chocolate - centi (100) (0.01)
Milk - mili (1000) (0.001)
Monday - micro ( 1million) (1 millionth)

Question 12

Fahrenheit to Celsius equation:

Answer 12

5/9 x (F - 32)

Question 13

Celsius to Fahrenheit equation:

Answer 13

C x 9/5 +32

Question 14

SI unit for length =

Answer 14

meter

Question 15

SI unit for mass =

Answer 15

kilogram

Question 16

SI unit for time =

Answer 16

second

Question 17

SI unit for electric current

Answer 17

ampere

Question 18

SI unit for thermodynamic temperature =

Answer 18

kelvin

Question 19

SI unit for amount of a substance =

Answer 19

mole

Question 20

SI unit for luminous intensity =

Answer 20

candela

Question 21

what are the scientific method steps?

Answer 21

1. observe and ask questions
2. research, collect data, analyze and synthesize
3. construct hypothesis
4. test hypothesis by conducting experiments
5. analyze experimental results and draw conclusion
6. report results

Question 22

independent variable definition ?

Answer 22

the variable being manipulated or tested in the experiment

Question 23

dependent variable definiton?

Answer 23

the responding variable

Question 24

control variable definition?

Answer 24

held constant and is used as a baseline for comparison ( aka a control group)

Question 25

a testable prediction of how the experiment will go between the relationships of the independent and dependent variables

Answer 25

hypothesis

Question 26

forecasting future events from trends found within a solid base of evidence

Answer 26

prediction

Question 27

senses used to gather information about the natural world

Answer 27

observation

Question 28

what is a theory ?

Answer 28

a proven to be true hypothesis and supported explanation about some aspects of the natural world

Question 29

What are isopods?

Answer 29

they are pillbugs that have the animal behavior to perform taxis, the ability to turn towards or away from an external stimulus.

Question 30

Why do we use isopods?

Answer 30

To assess student’s ability to use the scientific method to create an experiment.

Question 31

What were some variables in the isopod experiment?

Answer 31

independent: the different solutions like soy sauce salt, sugar water, etc
dependent: isopods
constants variable: water