1.__ is a high temperature physical state of matter in which atoms lose their electrons
__是一种高温物理状态,再此状态下,原子失去电子.
可能是等离子态plasma
2.A__ __ relates to a substance's ability to undergo changes that transform it into different substances.
__与一种物质发生变化,转化成其他物质的能力相关.
化学性质 chemical property
3.Achange in which one or more substances are converted into different substances is called a __ __ or__ __.
一种或几种物质转化为其他物质的变化叫做__或者__
化学变化/化学反应 chemical change/ chemical reaction
4.The substances that react in a chemical change are called the__.
在化学变化中参与反应的物质叫做__
反应物 reactants
5.The substances that are formed by the chemical change are called the ___.
在化学变化中生成的物质叫做__
生成物 products
6.A___ is a blend of two or more kinds of matter ,each of which retains its own identity and properties
__ 是由两种或两种以上物质参杂在一起,而每种物质本身的性质保持不变
混合物 mixture
7.Some mixtures are uniform in composition; that is,they are said to be ___.Homogenous mixtures are also called___.
有些混合物的成分是均匀分布的,他们被称作__,均匀的混合物也被称作__
均质的 homogenous 溶液 solutions
8.A___ ___has a fixed composition and differs from a mixture in the following ways:
a.Every sample of a given pure substance has exactly the same characteristic properties.
b.Every sample of a given pure substance has exactly the same composition.
__的成分是固定的,并且与混合物在以下几方面不同
a.每一个纯净样本都有完全相同的特征性质
b.每个纯净样本都有同样的成分
化合物 chemical compound
9.The vertical columns of the periodic table are called ___,or___.
元素周期表中每一竖列叫做__,或者__.
族 groups or families
10.The horizontal rows of elements in the periodic table are called____.
元素周期表中的横行叫做__
周期 periods
11.A___is an element that is a good conductor of heat and electricity.
__是一种有良好导电导热性的元素
金属 metal
12.A___is an element that is a poor conductor of heat and electricity.
__元素是电和热的不良导体
非金属 non-metal
13.A___is an element that has some characteristics of metals and some characteristics of non-metals
__元素有一定的金属性质和一定的非金属性质
类金属 metalloid