1-
arsenic
2-
calcium
3-
carbon
4-
copper
5-
helium
6-
gold
7-
iron
8-
lead
9-
acid
10-
catalyst
11-
chemical
12-
element
13-
compound
14-
to hydrate
15-
mixture
16-
to adsorb
17-
balanced
18-
to behave
19-
bond
20-
to catalyze
21-
chain reaction
22-
chemical reaction
23-
to dehydrate
24-
to distill
25-
equation
26-
formula
27-
to precipitate
28-
preservation
29-
reaction
30-
aluminum
arsenic
ουσιαστικό
a
ɑ
r
r
s
s
e
ə
n
n
i
ɪ
c
k
Spelling
Κλείσιμο
Σύνδεση
(αρσενικός)

(αρσενικός)

αρσενικό

a poisonous chemical element with properties of both metals and nonmetals that is grey in color, used in industry or as a pesticide

calcium
ουσιαστικό
c
k
a
æ
l
l
c
s
iu
m
m
(καλσίου)

(καλσίου)

ασβέστιο

a soft silver-white metal that is an important element in bones and teeth

What is "calcium"?

Calcium is a mineral that plays a crucial role in various bodily functions, including building and maintaining strong bones and teeth, regulating muscle contractions, and supporting nerve function. It is found in large amounts in the body and is mainly stored in bones and teeth. Calcium is also involved in blood clotting, hormone release, and cell signaling. Having enough calcium is important for overall bone health and can help prevent osteoporosis, a condition where bones become weak and brittle. Good dietary sources of calcium include dairy products like milk, yogurt, and cheese, as well as leafy green vegetables, tofu, and fortified foods.

carbon
carbon
ουσιαστικό
c
k
a
ɑ
r
r
b
b
o
ə
n
n
(καρβόνιο)

(καρβόνιο)

άνθρακας

a nonmetal element that can be found in all organic compounds and living things

copper
copper
ουσιαστικό
c
k
o
ɑ
pp
p
e
ɜ
r
r
(Κουπρο)

(Κουπρο)

Χαλκός

a metallic chemical element that has a red-brown color, primarily used as a conductor in wiring

What is "copper"?

Copper is a reddish-brown metal that is commonly used in electrical wiring, plumbing, and various industrial applications. It is known for its excellent conductivity of electricity and heat, as well as its resistance to rust or wearing away over time. Copper is also valued for its ability to be easily shaped into wires and pipes and its flexibility, enabling it to be stretched into thin sheets or drawn into fine wires. Additionally, copper is used in alloys, such as brass and bronze, for various purposes, including making musical instruments and decorative items.

helium
ουσιαστικό
h
h
e
i
l
l
iu
m
m
(ήλιον)

(ήλιον)

ήλιο

a chemical element that is a colorless noble gas which is lighter than air

gold
gold
ουσιαστικό
g
g
o
l
l
d
d
(χρυσάφι)

(χρυσάφι)

χρυσός

a valuable yellow-colored metal that is used for making jewelry

What is "gold"?

Gold is a chemical element with the symbol Au and atomic number 79. It is a dense, soft, yellow, highly malleable, and ductile metal that is one of the least reactive chemical elements and is known for its beauty and rarity. Gold has been used throughout history for various purposes, including currency, jewelry, and decoration. It is a highly valued precious metal, and its price fluctuates in the international market. Gold is also an excellent conductor of electricity, making it useful in electronics and other industries. Additionally, gold has been associated with wealth, luxury, and prestige, and it has been an object of human fascination and desire for thousands of years.

iron
iron
ουσιαστικό
i
aɪə
r
r
o
n
n
(σιδηρούχος)

(σιδηρούχος)

σίδηρος

a metallic chemical element with a silvery-gray appearance, widely used for making tools, steel, buildings, and various industrial products

What is "iron"?

Iron is a strong, metallic element that is commonly used in construction and manufacturing due to its durability and versatility. It is primarily found in nature as iron ore and is extracted through processes like smelting. Iron is often used to create steel, which is an alloy of iron and carbon, providing added strength and resistance to corrosion. In construction, iron is used for beams, columns, and reinforcement bars, contributing to the structural integrity of buildings and bridges. Additionally, iron is used in various tools, machinery, and appliances, making it a fundamental material in many industries.

lead
lead
ουσιαστικό
l
l
ea
i:
d
d
(μόλυβος)

(μόλυβος)

μόλυβδος

a heavy soft metal, used in making bullets, in plumbing and roofing, especially in the past

acid
ουσιαστικό
a
æ
c
s
i
ə
d
d
(οξέα)

(οξέα)

οξύ

a water-soluble chemical substance that contains Hydrogen and has a sour taste or corrosive feature with a PH less than 7

catalyst
ουσιαστικό
c
k
a
æ
t
t
a
ə
l
l
y
ə
s
s
t
t
(καταλύτρια)

(καταλύτρια)

καταλύτης

(chemistry) a substance that causes a chemical reaction to happen at a faster rate without undergoing any chemical change itself

anticatalyst
chemical
chemical
ουσιαστικό
ch
k
e
ɛ
m
m
i
ə
c
k
a
ə
l
l
(χημική ουσία)

(χημική ουσία)

χημικό

a substance or compound produced or used in a process involving chemistry

element
element
ουσιαστικό
e
ɛ
l
l
e
ə
m
m
e
ə
n
n
t
t
(στοιχείον)

(στοιχείον)

στοιχείο

a substance that is composed of only one type of atom, typically characterized by specific physical and chemical properties

compound
compound
ουσιαστικό
c
k
o
ɑ
m
m
p
p
o
a
u
ʊ
n
n
d
d
(σύνθετη ουσία)

(σύνθετη ουσία)

ένωση

(chemistry) a substance that its molecules consist of two or more elements that are held together by a chemical bond

to hydrate
ρήμα
h
h
y
d
d
r
r
a
t
t
e
(υδρολύω)

(υδρολύω)

υδροποιώ

(chemistry) to combine and form a compound with water molecules

Γραμματικές Πληροφορίες:

Αμετάβατος
mixture
ουσιαστικό
m
m
i
ɪ
x
ks
t
ʧ
u
ɜ
r
r
e
(μίγμα)

(μίγμα)

μείγμα

(chemistry) a combination of two or more substances without forming a chemical bond or any chemical reaction

to adsorb
to adsorb
ρήμα
a
a
d
d
s
s
o
o:
r
r
b
b
(απορροφώ)

(απορροφώ)

προσροφώ

to take in a liquid, gas, or other substance from the surface chemically or physically

balanced
balanced
επίθετο
b
b
a
æ
l
l
a
ə
n
n
c
s
e
d
t
(ομοιόμορφος)

(ομοιόμορφος)

ισορροπημένος

evenly distributed or in a state of stability

unbalanced
to behave
ρήμα
b
b
e
ɪ
h
h
a
v
v
e
(αντιδρώ)

(αντιδρώ)

συμπεριφέρομαι

(chemistry) to react in a particular way because of the laws

Γραμματικές Πληροφορίες:

Μεταβατικός
bond
bond
ουσιαστικό
b
b
o
ɑ
n
n
d
d
(σύνδεσμος)

(σύνδεσμος)

δέσμος

a link that holds atoms or ions together in any molecule or crystal

to catalyze
ρήμα
c
k
a
æ
t
t
a
ə
l
l
y
z
z
e
(ενεργοποιώ)

(ενεργοποιώ)

καταλύω

to increase the rate of a chemical reaction

Γραμματικές Πληροφορίες:

Μεταβατικός
chain reaction
ουσιαστικό
uk flag
/tʃˈeɪn ɹɪˈækʃən/
(αντίδραση αλυσιδωτού τύπου)

(αντίδραση αλυσιδωτού τύπου)

αλυσιδωτή αντίδραση

a chemical or nuclear process that is self-sustained and its products cause other processes of the same kind

chemical reaction
ουσιαστικό
uk flag
/kˈɛmɪkəl ɹɪˈækʃən/
(χημική αντίκρισις)

(χημική αντίκρισις)

χημική αντίδραση

(chemistry) a process in which several chemicals combine and form different substances

to dehydrate
ρήμα
uk flag
/dɪˈhaɪdɹeɪt/
(αφυδάτωση)

(αφυδάτωση)

αφυδατώνω

(chemistry) to lose water molecules during a chemical reaction

Γραμματικές Πληροφορίες:

Αμετάβατος
to distill
to distill
ρήμα
d
d
i
ɪ
s
s
t
t
i
ɪ
ll
l
(αποστάζω)

(αποστάζω)

σταγόνα

to heat a liquid and turn it into gas then cool it and make it liquid again in order to purify it

Γραμματικές Πληροφορίες:

Μεταβατικός
equation
ουσιαστικό
e
ɪ
q
k
u
w
a
t
i
o
n
n
(χρηματική εξίσωση)

(χρηματική εξίσωση)

εξίσωση

(chemistry) a symbolic representation of a chemical reaction that consists of the reactants and products

formula
ουσιαστικό
f
f
o
ɔ
r
r
m
m
u
j
ə
l
l
a
ə
(τύπος συμβόλων)

(τύπος συμβόλων)

τύπος

a set of conventional symbols that convey a fundumantal principle

to precipitate
ρήμα
p
p
r
r
e
ɪ
c
s
i
ɪ
p
p
i
ɪ
t
t
a
t
t
e
(καταθέτω)

(καταθέτω)

καταβυθίζω

(chemistry) to become separated from the solvent in a solid form

Γραμματικές Πληροφορίες:

Αμετάβατος
preservation
ουσιαστικό
p
p
r
r
e
ɛ
s
z
e
ɜ
r
r
v
v
a
t
ʃ
io
ə
n
n
(συντήρηση)

(συντήρηση)

διατήρηση

the action of keeping something the way it is or in good condition

reaction
ουσιαστικό
uk flag
/ɹiˈækʃən/
(χημική αντίδραση)

(χημική αντίδραση)

αντίδραση

(chemistry) a process in which several chemicals combine and form different substances

aluminum
aluminum
ουσιαστικό
a
ə
l
l
u
u
m
m
i
ə
n
n
u
ə
m
m
(αλουμινένιο)

(αλουμινένιο)

αλουμίνιο

a light silver-gray metal used primarily for making cooking equipment and aircraft parts

What is "aluminum"?

Aluminum is a lightweight, silvery-white metal that is widely used in various industries due to its versatility, durability, and excellent conductivity. It is the third most abundant element in the Earth's crust. Aluminum is valued for its strength-to-weight ratio, corrosion resistance, and ability to be easily shaped and formed into different products. It is commonly used in the manufacturing of aircraft, automobiles, beverage cans, cookware, and construction materials. Aluminum is also recyclable, making it an environmentally friendly choice for many applications.

Συγχαρητήρια! !

Έμαθες 30 λέξεις από Lesson 20. Για να βελτιώσεις τη μάθηση και την επανάληψη του λεξιλογίου, ξεκίνα να εξασκείσαι!

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