Density and Relative Density Flashcards Preview

1st year Plumbing math > Density and Relative Density > Flashcards

Flashcards in Density and Relative Density Deck (37)
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1

which of the three are physical change
~natural gas burning
~steel rusting
~lead melting

lead melting

2

density of CH4 gas

imperial 0.0456 lb/ft cu
metric 0.774 kg/m cu

3

flow of solder into a joint is a result of

capillary action

4

density of water

62.4 lb/ft cu, 10 lb/imp gal, 8.33 lb/US gal, 1000 kg/m cu, 1 kg/L

5

mercury in a glass tube could be classified as
-adhesive
-cohesive

cohesive

6

relative density of mercury

13.6

7

density of C3H8 gas

imperial 0.114 lb/ft cu
metric 1.935 kg/m cu

8

density has what where relative density doesnt

units (kg/m cu and lb/ft cu

9

density of CH4 liquid

imperial 4.24 lb/ft cu
metric 0.424 kg/m cu

10

viscous means

resists shearing or flow

11

density of C3H8 liquid

imperial 5.05 lb/gal
metric 0.508 kg/L

12

imperial gallon of water

10 lb/gal

13

density of water in kg and lb

1000kg and 62.4 lb

14

what is the difference between a compound and a mixture

compound is a chemically union of different molecules while a mixture contains different molecules of different elements but not chemically united.

15

mass=

density x volume

16

air at standard temp & pressure
Imperial and Metric

imperial 0.076 lb/ft cu, metric 1.29 kg/m cu

17

density=

mass/volume

18

definition of surface tension

molecular attraction of the molecules to each other at the surface of the liquid

19

definition of density

mass per unit of volume

20

relative density of propane gas and natural gas

propane 1.5 natural gas 0.6

21

how does a pressure cooker reduce cooking times

increased pressure and increase temperature

22

density of a solid object with a relative density of 3.5 is

1.5 lb/ft cu

23

definition of relative density for liquids and solids

mass of a substance compared to the mass of an equal volume of water

24

which of the following is most dense
-copper
-steel
-mercury

mercury

25

liquid dish washing detergent could be classified as?
-adhesive
-cohesive

adhesive

26

when is water most dense

39* F 4*C

27

which of the following is a chemical change
~separation of water into hydrogen and oxygen
~water turning into steam
~solder being liquefied

separation of water into hydrogen and oxygen

28

diffusion means

spreading automatically

29

tenacious means

resists deformation, strong

30

formula to find relative density

RD= Density/Density of water