Answer:
Cooling a substance causes molecules to slow down and get slightly closer together, occupying a smaller volume that results in an increase in density. Hot water is less dense and will float on room-temperature water. <u>Cold water is more dense and will sink in room-temperature water.</u>
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Answer:
What type of bonds are shown in this diagram?
A: covalent bonds
B: ionic bonds
C: hydrogen bonds
D: metallic bonds
(answer) metallic bonds
In what type of bonds do atoms join together because their opposite charges attract each other?
A: metallic bonds and covalent bonds
B: metallic bonds and ionic bonds
C: ionic bonds and covalent bonds
D: ionic bonds and hydrogen bonds
(answer) ionic bonds and hydrogen bonds
What types of bonds are shown in this diagram?
A: covalent bonds
B: ionic bonds
C: hydrogen bonds
D: metallic bonds
(answer) hydrogen bonds
Which statement best describes the types of bonds shown in the diagram?
A: an ionic bond; the hydrogen chloride molecule has an electrical charge
B: an ionic bond; a hydrogen ion is bonding with a chlorine atom
C: a covalent bond; the hydrogen atom’s two electrons are being shared with the chlorine atom
D: a covalent bond; the hydrogen atom’s single electron is being shared with the chlorine atom
(answer) a covalent bond; the hydrogen atom’s single electron is being shared with the chlorine atom
Which of the following bonds is the strongest?
A: hydrogen bonds
B: metallic bonds
C: valence bonds
D: covalent bonds
(answer)
Explanation:
UwU
Answer: see below
<u>Explanation:</u>
Zeros between the digit and decimal point are NOT significant.
Zeros between digits ARE significant.
a. 230 mL. sf: 23
b. 0.00540 s sf: 540
c. 1440 sf: 144
d. 50 ℃ sf: 5
e. 0.9405 g/cm3 sf: 9405
f. 700 jellybeans sf: 7
g. 1.05 x 10⁶ sf: 105
The structure of CF2Br2 has 2 structures total because there is one isomer of the molecule.
F F
l l
F---C---Br and Br---C---Br with 6 e- on each of the outer species
l l
Br F