stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Chemistry 1st Semester Exam review Flashcards | StudBud
Explore
/
Chemistry 1st Semester Exam review
Chemistry 1st Semester Exam review
74 terms
·
StudBud Administration
·
58 plays
Imported from external platform
Flashcards
74 cards
F
Practice quiz
P
Host live
L
Questions
74
Answers
1
The control is the One thing you change in an experiment?
True
False
2
The definition of an orbital is....
An area where the probability of finding an electron is low
How things move around atoms
Where you find electrons
An area where the probability of finding an electron is high
3
What is amplitude.
How far apart wave is.
How high a wave is.
How many waves per second.
4
Is hydrogen explosive?
no
yes
5
What is precision?
How exact you are.
How big something is.
How important something is.
How consistent your results are
6
Creator of Periodic Table
Chadwick
Thomson
Einstein
Mendeleev
7
Study of the structure of matter.
Biology
Chemistry
Anatomy
8
What is in the nucleus?
neutrons
electrons
protons and neutrons
electrons and protons
9
What is the definition of a hypothesis in science?
your friend’s answer
an observation
an educated guess
an article
10
Combustion (burning) is an ...
endothermic chemical reaction
endothermic physical reaction
exothermic chemical reaction
exothermic physical reaction
11
no charge particles
positively charged particles
number of protons
neutrons
negatively charged particleselectronsC
12
no definite shape or volume
all 3
solid
gas
liquid
13
graphite can be scratched with your finger nail
True
False
14
Most abundant alkali metals
Copper and silver
Sodium and potassium
Flourine and sodium
15
What do CFC's destroy?
the troposphere
the ozone layer
the atmosphere
cloud formation
16
What part of the electromagnetic spectrum can we see?
Infrared Rays and ultraviolet rays
Visible Light
Ultraviolet, visible light, and infrared rays
We can see the entire spectrum
17
How do you find Atomic Mass?
Electrons + Neutrons
Protons + Neutrons
Just Protons
Protons + Electrons
18
Graphite is soft because...
There are weak forces in between the layers
It has 3 covalent bonds to each carbon atom
There are no free electrons
There are free electrons
19
Substance with one type of atom
compound
molecule
element
cell
20
The sum of protons and neutrons around the nucleus
average atomic mass
atomic number
mass number
mass amount
21
Which of the following has the correct definition of a nucleus?
Gives support and protection to cell; made of cellulose in plants.
A part of a cell that controls 2/4s of everything in a cell.
There's no such thing.
The main part of the cell that controls everything within it.
22
Group 1A elements are called
Alkaline Earth metals
Alkali metals
Noble Gases
Halogens
23
How are compounds created?
Two elements chemically combined together
Two elements combined physically
They are put together
24
hydrochloric acid
sterilizes instruments
sanitizes hands
stomach acid
also called bleach
25
Where electrons "live"
Avon
Carrabassett Valley
Orbitals
Nucleus
26
What is matter?
Matter is a something that will destroy things
Matter is a word?
I dont know
Matter is anything that has mass and takes up space
27
Helium in a balloon?
Solid
Gas
Liquid
28
4 states of matter
Idk
Massachusetts, New Hampshire, Vermont, Maine.
only 3
Gas, liquid, solid, plasma
29
what is the definition of chemical change change
a physical change
matter
it is when something combines with another to form a substance,
Protons, Neutrons, and electronons
30
What percentage of oxygen is in the atmosphere?
14
79
21
78
31
The mass can tell you
how much a object weighs
how much volume a object has
how much density an object has
how much matter is in an object
32
Changes in the atoms nucleus
Physical change
Chemical reaction
Nuclear reaction
33
Atoms have electrons, neutrons, and ____.
protons
electrons
neutrons
34
Hydrogen is not essential for life
False
True
35
physical change definition
makes a new substances with propterys different from the origanol
total energy of all paticals in an object
a change of matter that proudeces one or more new substances
alters the form or apearances but does not change into a new one
36
Change in which a new substance is formed
physical change
chemical change
37
What is on the periodic table?
planets
people
stars
elements
38
The columns on the Periodic table are called?
shields
groups
periods
clans
39
Unit of measure for mass
kilograms
liters
matter
meters
40
Ions are...
Always negative
Very unreactive
Always positive
Charged particles formed when atoms lose or gain electrons
41
The rows on the Periodic table are called?
periods
families
shields
groups
42
Elements of the same group have similar _____________
Names
Physical Properties
Chemical properties
Numbers of electrons
43
Proposed a quantum model for the hydrogen atom
Ernest Rutherford
JJ Thompson
Niels Bohr
James Chadwick
44
what does calcium do
makes protein
creates blood cells
help bone structure
makes amino acids
45
What is the definition of Volume?
The amount of space that a substance or object takes up.
How much stuff there is.
A book forming a part of a work series.
How loud something is.
46
Group number of alkaline earth metals
18
1
2
17
47
uniform and unchanging composition
Gas
Substance
Matter
48
A rainbow is an example of what quality of light?
spectrum
spectator
species
respect
49
What is the definition of scientific methods?
An educated guess
Organized ways to answer questions and solve problems.
A step-by-step process to follow
A conclusion drawn from data and observations
50
physical change
changing physical reactions
change that occurs without altering the chemical composition
51
Qualitative data uses
your senses
nouns
verbs
numbers
52
Weight is the measure of the earths gravitational pull.
True
False
53
Is essential for healthy bones and teeth
Sodium
Magnesium
Iron
Calcium
54
Electrons in the outermost orbitals.
Hund Electrons
Creepy Electrons
Valence Electrons
Far electrons
55
The space occupied by an object
Density
Velocity
Volume
Mass
56
A deadly gas
Oxygen
Hydrogen
Chlorine
57
Which definition describes the mass number?
The number of neutrons and electrons
The number of protons and electrons
The number of protons
The number of protons and neutrons
58
what is the definition of a gas
has no definite shape or volume
has a definite shape and volume
has no definite shape but definite volume
59
Found in seafood
Calcium
Iodine
Bones
60
Ground state is the..?
equal allowable state of an atom
smallest allowable state of an atom
highest allowable energy state of an atom.
lowest allowable state of an atom
61
Define the term data
facts that support an idea
facts and statistics collected
an organised collection of data.
62
Heterogeneous mixture
The substances are not evenly mixed (Trail mix)
Substances are evenly mixed (soda)
63
Added to toothpaste and some drinking water
Sugar
Chlorine
Flourine
64
How many times can aluminum be recycled?
One Time
As much as you want
five times
Ten times
65
Matter that flows and takes the shape of its container
all of them
solid
gas
liquid
66
Where are neutrons found?
In shells
In the nucleus
Orbiting the nucleus
67
Helium is a nonmetal
True
False
68
How is the metal aluminum used?
make paper
clean bottle caps
make soda cans
69
Colorless, odorless and relatively unreactive
Oxygen
Carbon
Nitrogen
70
A hypothesis must be ______________.
1000 words and double spaced
tested
written in caps
a question
71
Atoms of different elements combine to form
absolute zero
protons
compounds
ions
72
Matter with uniform and unchanging composition
substance
states of matter
element
mixture
73
definition of frequency is...
the vertical distance from its equilibrium point to its crest [height].
the horizontal distance from the equilibrium point of a wave to the next.
is the distance betweenconsecutive crests (or consecutive troughs).
a measure of the number of times a wave cycles per unit of time.
74
freezing point celsius
373
100
273
0
