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Ket [755]
3 years ago
14

Aisha drops an antacid tablet in water and times how long it takes to dissolve. Which of the following will decrease the reactio

n rate?
increasing water temperature
decreasing water temperature
using more water



What is the end result of a nuclear fusion reaction?
two new atoms with smaller nuclei form
molecule of atoms forms
one new atom with a larger nucleus forms
new bonds between atoms are formed



The chemical reaction between iron (Fe) and oxygen (O) results in the loss of electrons from iron. This reaction is an example of _____.
oxidation
respiration
combustion
sublimation
Chemistry
2 answers:
Natali5045456 [20]3 years ago
5 0

A -decreasing water temperature

madam [21]3 years ago
4 0
1. Decreasing the temperature of the water.
2. One new atom with a large nucleus forms.
3.The reaction is an example of oxidation.
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inysia [295]

Answer is: 2. atomic number.

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3 0
3 years ago
Read 2 more answers
Please help I’m stuck
jonny [76]

Answer:

wouldn't it be the #2 because +∆H um I forgot

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Contrast aluminum and nitrogen. Show why aluminum is a metal and nitrogen is not.
Nitella [24]

Answer:

Nitrogen: Non- metal = they are poor conductors of heat and electricity, they are brittle solids, not ductile in their solid state - they cannot be rolled into wires or pounded into sheets. They are usually dull and therefore show no metallic luster and they do not reflect light. They also have a low density.

Aluminium: Metal= Offers a rare combination of valuable properties. It is one of the lightest metals in the world: it's almost three times lighter than iron but it's also very strong, extremely flexible and corrosion resistant because its surface is always covered in an extremely thin and yet very strong layer of oxide film. It doesn't magnetise, it's a great electricity conductor and forms alloys with practically all other metals.

Explanation:

5 0
3 years ago
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