Chemistry High School

Which statement about elements is true?
All substances are made up of elements.
There are approximately 50 elements.
An element is made up of different types of atoms.
Most elements are nonmetal.


Answers

Answer 1

Answer:

first one is right.

there are 117 elements, so 2nd option is wrong.

elements are made up of one type of atoms, so 3rd is also wrong.

most elements are metal. so 3rd is wrong

Related Questions

what element has 5 protons, 7 electrons, and 6 neutrons

Answers

Answer:  Boron

Explanation: lol

Answer:

Boron. (What kind of name is that?????????????)

Explanation:

what is a chemical equation

Answers

Answer:

"Symbolic representation of a chemical reaction in the form of symbols and formulae"

Answer:

A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulas.

Explanation:

Example- Zinc metal reacts with dilute sulphuric acid to form zinc sulphate and hydrogen gas. This equation is written as: Zn+H2SO4→ZnSO4+H2.


How do the mass number and atomic change as a particle goes through beta decay

Answers

Answer:

The atomic mass number does not change because a beta particle has a much smaller mass than an atom. The atomic number goes up because a neutron has turned into an extra proton, however in beta decay a fast-moving electron is fired out of the nucleolus

Hope this helped!

It never changes within the matter of things

5 The atoms of a certain element each contain 36 protons and 8 valence electrons. Which
statement correctly identifies this element and describes its chemical reactivity? (8.58)
A The element is krypton, Kr, and it is not very reactive.
B The element is chlorine, Cl, and it is highly reactive.
C The element is krypton, Kr, and it is highly reactive.
D The element is chlorine, Cl, and it is not very reactive.

Answers

Answer:

dfdfaxc b

Explanation:

how did the idea of what a cell was develop overtime​

Answers

Answer:

experiments

Explanation:

I am not sure but heres my take

Answer:

It was only after the invention of electron microscope that the idea developed


What holds solid parties together?​

Answers

Answer:

The cool people like me XD

Explanation:

Answer:

Solid – In a solid, the attractive forces keep the particles together tightly enough so that the particles do not move past each other. Their vibration is related to their kinetic energy. In the solid the particles vibrate in place. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart.

Explanation:

Hope this helped Mark BRAINLIEST!!!

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