Elements And More

Question 1

Cu

Answer 1

Copper

Question 2

Ag

Answer 2

Silver

Question 3

An

Answer 3

Gold

Question 4

O

Answer 4

Oxygen

Question 5

Mercury

Answer 5

Hg

Question 6

Compounds

Answer 6

Combined elements such as:
water H20
Carbon dioxide CO2
Hydrogen Peroxide H2O2
Table Salt NACL2

Question 7

Homogeneous

Answer 7

homogeneous is one that has the same composition throughout.

A Substance that is evenly mixed at the molecular level.

Looks like one single phase (solid, gas, or liquid)

Question 8

Heterogeneous mixture

Answer 8

A heterogeneous mixture is a mixture where the composition is not uniform throughout.

Can usually separate them easily

Question 9

Compound

Answer 9

Consists of 2 or more elements chemically combined in a diff ratio

Question 10

Mixture

Answer 10

Are physically mixed together not chemically so it can be seperated

Question 11

Pure element

Answer 11

Are usually elements on the periodic table like oxygen, gold, and iron

Question 12

Physical properties

Answer 12

Measured without changing identity of substance (density, shape, physical state)

Question 13

Chemical properties

Answer 13

Describes the ability of a substance to interact with other substances and to change into a new substance.
(Ex: flammable, toxic, corrosive)

Question 14

Equation to convert celsius to kelvin

Answer 14

K= C + 273.15

Question 15

Equation to convert celsius to Fahrenheit

Answer 15

F= (1.8)C +32

Question 16

Absolute zero

Answer 16

Below freezing point (so cold object loses kinetic energy)

Question 17

Q=m x c x 🔺T

Answer 17

Q= heat

M= mass (grams)

c= specific heat capacity

🔺T= Change of temp

Question 18

How do you find 🔺T

Answer 18

T final - T initial

(Final heat - initial heat)

Question 19

Specific heat capacity for water

Answer 19

1.00 cal/g C

4.184 J/ g C

Question 20

1 g =

Answer 20

1g= 334 J