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