Chem intro Study Cards.

Question 1

M to NM

Answer 1

1m=1e+9nm

Question 2

s to ms

Answer 2

1s = 1,000 ms

Question 3

L to mls

Answer 3

1L = 1,000 mls

Question 4

How to remember Metric Mnuemonic

Answer 4

Kittens Hate Dogs But Do Chase Mice.

Kilo, Hecta, Deka, (Base Unit), Deci, Centi, Milli

Question 5

Avogadro’s #

Answer 5

6.022 x 10²³

Question 6

NAG (solubility)

Answer 6

Nitrates (NO₃), Acetates (C₂H₃O₂)and Group 1 elements

Question 7

SAG (solubility)

Answer 7

Sulfates (SO₄)
Ammonium (NH₄) and Group 17.

Question 8

PMS (solubility)

Answer 8

Pb, Mercury & Silver.

Question 9

Solubilty Mnemonic

Answer 9

NAG and SAG soluble with PMS, Castrobear is the exception.

Question 10

Castro Bear.

Answer 10

Calcium, Strontium, Barium.

Question 11

electronegativity difference less than 0.5

Answer 11

Non Polar covalent Bond.

Question 12

electronegativity difference less 0.6-1.7

Answer 12

Polar Covalent bond.

Question 13

electronegativity difference greater than 1.7

Answer 13

Ionic Bond

Question 14

What is A? ^AC

Answer 14

Total number of nucleons (Mass #)

Nucleons (Protons + Electrons)

Question 15

What is B? _BC

Answer 15

Atomic #

Number of protons

Question 16

order to convert M per S to nm per ms

Answer 16

multiply the meters by the ⁹ notation for nm and have the nm/1,000ms = 1s, now divide for nm per ms.

don’t multiply becuase it is a fraciton/ ratio.

Question 17

Where should the meniscus be read?

Answer 17

At the bottom to the correct Sig Fig.

Question 18

What is a heterogenous mixture?

Answer 18

A mixture in which the composition is not uniform, this includes things like blood, as when looked at there are different cells in blood and when left out it spontaneously separates from the RBC and serum.

Question 19

What is a homogenous mixture?

Answer 19

A mixture with a uniform composition that does not spontaneously change. Think air or homogenized milk, as raw milk will settle and separate.

Question 20

What is an Isotope?

Answer 20

An isotope is an atom with the number number of protons and electrons but a different number of neutrons, this is is how atomic mass can be estimated on the periodic table.

Question 21

What are main group elements?

Answer 21

groups 1,2, & 13-18

Question 22

How to Round for Sig Figs when +/-?

Answer 22

Round to the place of the number with the least decimal places.

Ex: 10.589-1.1= 9.5

Question 23

How to Round for Sig Figs when multiplying and dividing?

Answer 23

Round to the number with the least amount of significant digits.

Ex: 0.00013 x 500 = 0.07

Question 24

How many sig figs in 5,000?

Answer 24

1

Question 25

How many sig figs in 600.?

Answer 25

3

Question 26

How many sig figs in 700.0?

Answer 26

4

Question 27

How many sig figs in 0.0000156?

Answer 27

3

Question 28

How many sig figs in 0.0003400?

Answer 28

4