Chemistry

Anything

300

How do you convert °C to Kelvin?

°C+____=Kelvin (K)

273.15

300

What is the equation for volume?

What would be the volume of a metallic substance if it weighed 32.7g and had a density of 6.43 g/cm³

v=m/d;5.09cm³

300

What is the definition of Accuracy? 

The closeness of a measurement to the correct/accepted value.

300

Your doing an expirement with 73.2 mol of aluminum. How many particles are present in this substance/expirement. 

4.41x10²⁵ part

(73.2 mol Al)/1 x 6.02x10²³/1 mol

300

Elements _____ be broken down into simpler substances; Compounds _____ be broken down into simpler substances 

Give an example of a compound

Cannot;Can;NaCl, KCI, H₂O

Anything

300

When particles are spreading apart and moving faster that means energy is _____ to the system, which leads to an increase in _______. 

added;temperature

300

Convection has to do with _____ & ______; conduction means substances are ______; radiation means ______ waves. 

liquids;gasses;touching;electromagnetic

300

What is the definition of Precision? 

The closeness of a set of measurements to one another. 

300

Give an example of a chemical and physcial property. 

Chemical: alkali metals w/ water, flammability; Physical: density, color, shape

300

Definition of Constraint 

Examples of constraints 

limitations to the design; cost, weight, dimensions, resources, time. 

Anything

300

What is the density equation? 

Is density considered an extensive or an intensive property? 

d=m/v;intensive

300

How do you calculate percentage error?

An expirement called for 50 mL of water, you measured 75 mL of water accidently. What is your percentage error?

(experimental-actual)/actual x 100;50%

300

1 year = _____ days; 1 day = ____ hours; 1 hour = ____ seconds 

How many seconds are there in one year?

365;24;3600;31,536,000 seconds

300

Solid particles are _____ tightly together; liquid particles _____;gas particles _____ _____.

packed;flow;move rapidly

300

Definition of Criteria 

Examples of Criterias 

goals that state whether or not the system is successful; cost, safety, reliability, aesthetics

Anything

300

What is the equation for density? 

Calculate the density of acrylic if it has a mass of 8.23g and a volume of 15.63 cm³

d=m/v;0.53 g/cm³

300

What is the significant figure rule for addition and subtraction? 

Convert the following into scientific notation: 0.093452

Answers should be to the least precise measurement (lowest decimal) USE THE BUDDY SYSTEM;9.35x10^-2

300

Homogenous mixture means it is _____;a heterogenous mixture means it is NOT _____

uniform;uniform

300

Our calorimeter was an _____ system because _____ & _____ were able to _____ _____. 

open;matter;energy;flow freely

300

What kind of transformation is occuring when we are burning a marshmallow during our calorimeter expirement? (TYPE)

Chemical (food) --> Thermal (heat/fire)

Anything

300

What is the equation for mass? 

If you had a density of 9.5g/mL and a volume of 22 mL for a cup of soup, what would be its mass? 

M=d(v);209 g 

300

What do seperation techniques take advantage of? 

Physical properties 

300

How do you convert from moles of a substance to particles (atoms) of a substance and vice versa?

What is avogadro's number? 

Using avogadro's number;6.02x10²³

300

You are performing an expirement with 21.7g of Nickel. The temperature change that occured was 45°C to 108°C. The specific heat capacity of Nickel is 0.44 J/g⋅°C. How much energy was required for this temperature change to occur?

q=601.5J;q=mcΔT; q= (21.7g)(0.44 J/g⋅°C)(108°C-45°C)

300

What kind of transformation is occuring when we are burning a marshmallow during our calorimeter expirement? (FORM)

Potential --> Kinetic