問題一覧
1
A ______ property is one which describes the way something reacts with itself or something else
chemical
2
A mixture in which the two or more pure substances are visibly identifiable
heterogenous mixture
3
Hardness
physical
4
Mercury (Hg)
element
5
A semi-conductor is a
metalloid
6
Coffee
homogeneous mixture
7
Group 1 on periodic table is called
alkali metals
8
Rows on the periodic table are called
periods
9
Mass
extensive
10
Define isotope
different amount of neutrons
11
A group of atoms with similar properties
element
12
______ is the study of matter and the chnages it undergoes
chemistry
13
Air (N 2 and O 2)
homo mixture
14
When something undergoes a ______ the chemical properties of the substance do change
chemical change
15
Group 18 is called the
noble gas
16
Resistance to corrosion
chemical
17
Groups 1 and 2 13 through 18 are collectively called the
main group elements
18
The chemical combination of two or more elements
compound
19
Combustion
chemical
20
Density
intensive
21
When something undergoes a ______ the chemical properties of the substance do not change
physical change
22
What is an example of an extensive property?
mass
23
Group 2 on the periodic table is called
alkali earth metals
24
How many electrons are in one atom of carbon?
6
25
Group 17 is called the
halogens
26
An ________ property is one which does change with sample size
extensive
27
The physical combination of two or more pure substances
mixture
28
A _______ property is one which describes the look, touch, feel or general appearance of something.
physical
29
A ______ is a description of something
property
30
______ is anything that has mass and occupies space
matter
31
An _________ property is one which does not change with sample size
intensive
32
The ability to do work is called ______
energy
33
If an atom of carbon gains one electron, how many electrons will carbon now have?
7
34
Give the atomic number and atomic mass number first three
29 and 63.55, 78 and 195.08, 53 and 126.9
35
A mixture in which the two or more pure substances are not visibly identifiable. This is also called a
Homogeneous mexture; solution
36
What is the nuclear charge of an atom of carbon?
+6
37
What is the atomic charge on one atom of carbon
0
38
A _____ has the general properties of conductive, malleable, ductile, and solid
metal
39
______ is the measure of the amount of matter in a sample
mass
40
Groups 3-12 are collectively called the
transition metals
41
A _____ has the general properties of non-conductive, brittle, and gas or liquid
non-metal
42
Columns on the periodic table are called
groups/families
43
What is an example of an intesive property?
density