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2.1/2.2 CP biology part 2 Flashcards | StudBud
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2.1/2.2 CP biology part 2
2.1/2.2 CP biology part 2
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Questions
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Answers
1
Name this ion
nitrate
hydroxide
sulfate
carbonate
2
Chemical bonds join what together?
Atoms
Carbohydrates
Proteins
Lipids
3
The nucleus contains the following subatomic particles
protons and electrons
Protons and neutrons
protons, neutrons, and electrons
neutrons and electrons
4
What elements are in the molecule C
2
H
6
?
Calcium and Helium
Carbon and Hydrogen
Calcium and Hydrogen
Carbon and Helium
5
Table salt chemical formula is...
H
NaCl
NA
Cl
6
When the hydrogen ion concentration goes up, the pH ___
stays the same
goes toward 7
gets lower
gets higher
7
What is the smallest unit of matter?
molecule
element
atom
crumb
8
True or False. An ionic bond is a van der Waals force?
False
True
9
What is a neutral atom?
An atom that won’t take sides in an argument
An atom with no ionic/electrical charge
An atom with too many neutrons
An atom that is against war
10
What is
one
purpose of water?
To swim in
To replace carbohydrates
To let fish live in it
To carry nutrients (like oxygen) to cells
11
How many subatomic particles are in a Carbon-12 atom?
24
6
12
18
12
Atoms are made up of smaller subatomic particles.
true
false
13
Hydrogen bonds are weak, but can hold water molecules together by bonding which way?
the oxygens of each molecule bond together
the hydrogens of each molecule bond together
the oxygen of one molecule bonds to the hydrogen of another molecule
14
What are the subatomic particles?
h2o h3o
ions, cations, anions
Protons, neutrons, and electrons
15
What is water necessary for?
Just plants
All living things
Just humans
Just animals
16
What is a solvent?
a substance in which a solution is created
a substance in which a solution is frozen
a substance in which a solution dissolves
a substance in which a solution is boiling
17
which is bigger an atom or a molecule?
electron
electric currents
atom
molecule
18
what is a mixture?
matter that is made of one type of atom or molucule
a mix of atoms or molucules
19
What is a solute?
The solution
The liquid something is dissolved in
The thing that is dissolved (like sugar/salt)
None of the above
20
What is an ion?
A great word to make chemistry puns with
A unit of time.
An atom or molecule with a positive or negative charge
An organic molecule
21
What is a solution?
The thing that is dissolved in a liquid
The combination of liquid and solute
hydrophobic
solute
22
what is compound?
pure substance of 4+ diff. elements that are chem. combined
pure substance of 3+ diff. elements that are chem. combined
pure substance of 5+ diff. elements that are chem. combined
pure substance of 2+ diff. elements that are chem. combined
23
What is the chemical symbol for a water molecule?
HO2
H2O
2H0
H2O
24
What is a mixture?
A bunch of both elements and compounds
A bunch of elements
All of the above
A bunch of compounds
25
Ionic bonds ___________ electrons.
share
adopt
transfer
disappear
26
Why do atoms form bonds?
they strive to fill their outer electron shell
they have a tendency to diffuse toward each other and stick
they are all charges and opposites attract
27
Water has 2 hydrogen and 1 oxygen
True
False
28
what is a solvent?
the substance being dissolved
the substance in which the solute is dissolved
29
What is the most powerful magnification level?
10x
100x
40x
30
Which is a molecule?
All of the above
Water (H2O)
Methane (CH4)
Carbon Dioxide (CO2)
31
Hydrogen bonds have what atom?
Gallium
Oxygen
Hydrogen
Helium
32
___________ are the part of the atom that form the chemical bonds.
neutrons
protons
electrons
33
What is an example of a Hydrogen Bond?
O2H
H2O
HO
CO2
34
what holds the hydrogen atoms to the oxygen atoms?
Covalent Bond
Polar bond
Polor bond
oxygen
35
Which subatomic particles are found outside the nucleus?
Neutrons
Protons
Electrons
36
An atom is smaller than a molecule
True
False
37
What kind of substance is the object below?
ELement
Molecule
Compound
Atom
38
What is the name of sodium ion
Sr
Na+
Cl
Cl+
39
what is the atomic number for zinc
69
30
10
40
40
What is the van der Waals force?
The force that lets snakes move
There is no such force
The force that contributes to bonding between molecules
The force that lets bats see
41
A chemical formula is....
symbols and supscripts with type of bond
subscripts only
symbols only
symbols and subscripts that tell number of atoms
