All categories

3 years ago

What makes up most of an atom?

Chemistry

2 answers:

guajiro [1.7K]3 years ago

8 0

Answer:

small particles

Explanation:

Because an atom is the smallest unit of matter

MrRa [10]3 years ago

5 0

Answer:

Virtually all the mass of an atom resides in its nucleus, according to Chemistry LibreTexts. ... The protons and neutrons that make up the nucleus are approximately the same mass (the proton is slightly less) and have the same angular momentum, or spin.

Explanation:

You might be interested in

A physical change _____ change the composition or identity of the substance. will will not 2. An example of a physical change is

Sav [38]

Answer:

not sure

Explanation:

a physical change (can)change.,....

6 0

4 years ago

The digestion of food in the body is an example of ____________ reaction

Anit [1.1K]

Answer:

A Chemical Reaction

Explanation:

There are 2 kinds of reactions physical and chemical. The digestion process often involves the use of digestive enzymes in your mouth and acid in your stomach.

4 0

4 years ago

A chemist performs the following reaction to make sodium nitrate

vagabundo [1.1K]

Answer:

See below

Explanation:

A chemist preforms the following: Neutralizing nitric acid (HNO3) with soda ash (Na2CO3). This reaction will then create sodium nitrate and carbonic acid, which will then decompose into water (H20)

5 0

3 years ago

Read 2 more answers

When will a seed begin to germinate?

Vlada [557]

When it has sunlight and water

4 0

3 years ago

Read 2 more answers

The last element in any period always has:

brilliants [131]

Answer: The correct option is The properties of a noble gas.

Explanation: There are 7 periods in the periodic table.

The last element of each period are Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn) and Ununoctium (Uuo).

The electronic configuration for Helium is $1s^2$ . For He, The outermost electrons are 2.

The electronic configuration for all the other elements is $ns^2ns^6$ ( where, n = 2, 3, 4, 5, 6 and 7 respectively). For all the other gases, the outermost electrons are 8.

All these elements have stable electronic configuration and are not reactive in nature. Hence, they are considered as noble gases.

Therefore, the last element of each period always have the properties of a noble gas.

4 0

3 years ago

Read 2 more answers