外研版必修1 Module 5 A Lesson in a Lab Vocabulary 课件（20张PPT）

(共20张PPT)
Unit
5
The
lesson
in
a
lab
高一外研版必修一
Vocabulary
Substance
[?s?bst?ns]
Liquid
[?likwid]
Gas
[ɡ?s]
Solid
[?s?lid]
QO
Periodic
Table
/
pi?ri??dik
/
Chemical
symbol
Chemical
symbol
Atomic
number
Name
of
element
Copper
/?kɑp?/
Copper
(Cu)
Metal
When
you
heat
a
metal,
it
expands
not
contracts.
Most
metals
conduct
electricity.
expand[iks?p?nd]
及物动词
vt.
&
不及物动词
vi.
1.使…变大,
扩大,
扩张,
增强（尺码、数量或重要性）
The
ranks
of
the
teachers
are
constantly
expanding.
教师队伍日益扩大了。
The
merchant
wants
to
expand
his
business.
那个商人想扩大他的经营。
2.伸展,
伸开,
张开,
展开
The
petals
of
many
flowers
expand
in
the
sunshine.
许多花瓣在阳光下绽放。
The
eagle
expanded
its
wings.
雄鹰展翅。
contract[k?n?tr?kt]
及物动词
vt.
&
不及物动词
vi.
1.染上(恶习,
疾病等)
Bad
habits
are
easy
to
contract.坏习惯很容易养成。
My
son's
contracted
a
severe
fever.我的儿子发高烧。
2.缩小;
紧缩
Metal
contracts
as
it
becomes
cool.金属冷却时体积缩小。
及物动词
vt.其他读音：[?k?ntr?kt]
1.缔结;
订契约
They've
contracted
an
agreement.他们缔结了一项协议。
They
have
contracted
to
build
a
railway
across
Africa.他们已立约承建一条穿越非洲的铁路。
名词
n.其他读音：[?k?ntr?kt]
1.契约,
合同
He
has
a
two-year
contract
of
employment
with
the
firm.他与公司有一个两年的雇佣合同
Potassium
[p??t?si?m]
Potassium
(k)
Magnesium
/m?ɡ?nizi?m/
Sodium
/?sodi?m/
Name
of
element
Chemical
symbol
Atomic
number
Sodium
(na)
Hydrogen
/?ha?dr?d??n/
Atomic
number
Chemical
symbol
Name
of
element
Hydrogen
(h)
Zinc
/z??k/
Zinc
(zn)
Aluminium
/?lj??m?ni?m/
Aluminium
(Al)
碳
-C-carbon/?kɑrb?n/
氧-O-oxygen/??ksid??n/