Sig Figs
What are the sig figs in 10,024,500?
6 sf
d=m/v
mass/volume
convert 20km to mm.
2.0x10^7
non metal = right hand
metal = left hand
What exactly is a neutron?
apart of an atom and it has a neutral charge.
4 sf
If an object has the mass of 7.65g and the volume of 3.2mL what is the density?
2.4g/mL
convert 37 mL into km
3.7x10^-8
Name the alkali, alkaline earth, halogens, noble gases, and transition elements for each column.
Any one can be named I will check after one is stated .
What's the difference between a neutron, electron and proton?
Proton=positive charge in nucleus
Electron = negative charge outside nucleus
Neutron= neutral charge in nucleus
How many Sig Figs do you use when you multiply and add together?
Multiply the least amount of SF then for addition make sure to go with the least amount past the decimal point.
Does the units for density's volume matter?
Yes, must always have volume in mL not L
EXPLAIN how you would convert from km to mm
km-> m-> cm-> mm
what is the charge for a non-metal group?
Negative (anion)
Do all elements on the periodic table have aspects of an atom?
yes the periodic table is made up of elements that are made up of atoms.
How many Sig Figs are present?
600,89 x 7.90
answer - 474703.1
Sig figs are 3 because you will put that answer into Scientific notion.
if a graduated cylinder contains 18.4mL of water. After an object with a mass of 13.09g is placed in grad. cylinder, the volume reading increased to 30.8mL. What is the density?
1.06g/mL
took 13.09/30.8-18.4
Steve races to the nearest taco stand at lunchtime and sees that his pedometer recorded his peak speed at 108.9 cm/s. What was Steve's peak speed in kilometers per hour?
3.920km/h
cm->m->km->s->min->h
What is the charge for a metal group?
positive (cation)
Give the symbol for the following elements:
Co
Br
H
Cl
Se
Co=cobalt
Br=bromine
H=hydrogen
Cl=chlorine
Se= selenium
How many Sig Figs are present?
7.89 x 9.0 + 8.678 =
There is 2 sig figs, because multiplication and addition rules.
What are the conversions associated with density?
1g=1cm3
1g=mL
The surface temperature on Mercury has been measured to be 381 K.What is this temperature in degrees Celsius?
381k-273.15
will get Celsius
What is the difference between charges of a non-metal, metal, transitional metal and noble gasses?
He
Li
Cl
He=helium is a non-metal apart of the noble gases
Li= Is a metal, a part of the alkali earth metals
Cl= is a non-metal part of the halogens