Ch.4 Flashcards
0
Q
What is a sample of matter that has the same composition & properties throughout? #2
A
Substance
1
Q
1
What is the weighted average mass of an element?
A
Atomic mass
2
Q
3
What is a negatively charged subatomic particle
A
Electron
3
Q
What states that matter is neither created nor destroyed , only changed in form? #4
A
Law of Conservation of Matter
4
Q
What is a positively charged central part of the atom? #5
A
Nucleus
5
Q
What is a positively charged particle in the nucleus of the atom? #6
A
Proton
6
Q
What is a uncharged particle in the nucleus of the atom? #7
A
Neutron
7
Q
What are elements that generally have a shiny or metallic luster? #8
A
Metals
8
Q
What is matter that is only made up of 1 type of atom? #9
A
Elements
9
Q
What tells u the # of protons in the nucleus of each atom of an element? #10
A
Atomic #
10
Q
What is anything that has mass & takes up space? #11
A
Matter
11
Q
What are atoms of the same element that have different numbers of neutrons? #12
A
Isotopes
12
Q
What is the sum of an atom's protons & neutrons #13
A
Mass number
13
Q
What is a small particle that takes up most types of matter on earth? #14
A
Atom
14
Q
What is a pure substance whose smallest unit is made up of atoms of more than one element? #15
A
Compound
15
Q
What is formed when 2 or more substances come together but don't combine 2 form a new substance? #16
A
Mixtures
16
Q
What r elements that r usually dull in appearance & poor conductors of heat & electricity? #17
A
Nonmetals
17
Q
What r elements that have characteristics of both metals and nonmetals? #18
A
Metalloids
18
Q
What is an atom?
A
A small particle that takes up most types of matter on earth
19
Q
What is Atomic Mass?
A
Weighted average mass of an element
20
Q
What is an Atomic Number?
A
It tells u the # of protons in the nucleus of each atom of an element
21
Q
What is a compound?
A
A pure substance whose smallest unit is made up of atoms of more than one element
22
Q
What is an electron?
A
A negatively charged subatomic particle
23
Q
What is an element?
A
Matter made up of only 1 kind of atom
24
What are isotopes?
Atoms of the same element that have different numbers of neutrons
25
What is the Law of Conservation of Matter?
It states that matter is neither created nor destroyed,only changed in form
26
What is mass #?
The sum of an atom's protons & neutrons
27
What is matter?
Anything that has mass & takes up space
28
What are metals?
Elements that generally have a shiny or metallic luster
29
What r metalloids?
Elements that have characteristics of both metals & nonmetals
30
What is a mixture?
It is formed when 2 or more substances come together but don't combine 2 form a new substance
31
What is a neutron?
An uncharged particle in the nucleus of the atom
32
What is a nonmetal?
It is a elements that r usually dull in appearance & poor conductors of heat & electricity
33
What is the nucleus?
Positively charged central part of the atom
34
What is a proton?
A positively charged particle in the nucleus of the atom
35
What is a substance?
A sample of matter that has the same composition & properties throughout
36
An element is made up of only 1 kind of...
1. Isotope
2. Atom
3. Plastic
Atom
37
The periodic table lists...
1. Common molecules
2. Compounds
3. Elements
Elements
38
Isotopes can have the same...
1. Mass #
2. Atomic #
3. # of subatomic particles
Atomic #
39
Most elements r...
1. Metals
2. Nonmetals
3. Metalloids
Metals
40
On the periodic table, metalloids r found...
1. On the left side
2. On the right side
3. Between the metals and nonmetals
Between the metals & the nonmetals
41
```
A...
1. Metal
2. Metalloid
3. Nonmetal
Has no luster & is a poor conductor
```
Nonmetal
42
```
Many...
1. Metals
2. Metalloids
3. Nonmetals
Can conduct heat & electricity,but they r not the best conductors
```
Metalloid
43
```
The...
1. Metals
2. Metalloids
3. Nonmetals
All r malleable,have luster,& r good conductors
```
Metals
