Basic Chemistry

Solubility (when a substance dissolves)

• Chemical Property

• Physical Property

This property can be observed and measured without changing the matter being studied

• Physical Property

• Chemical Property

A new substance forms from reactants like a gas or precipitate that was not there before

• Physical Property

• Chemical Property

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Atoms of the reactants were rearranged to form different molecules to form the products

• Chemical Property

• Physical Property

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Where is most of the mass in an atom located?

• in the nucleus

• in the protons

• in the neutrons

• in the electrons

Tags

NGSS.MS-PS1-1

What is the atomic number?

• the number of protons

• the number of protons and neutrons

• the number of neutrons

• the number of protons and electrons

An element is a ___ that cannot be separated into simpler substances by physical or chemical means.

• pure substance

• mixture

• solution

• compound

Tags

NGSS.MS-PS1-1

The smallest piece of an element:

• quark

• electron

• shell

• atom

How are ionic bonds formed?

• Transfer of electrons

• Sharing of electrons

How are covalent bonds explained?

• When one atom takes the other atom's electron

• When the atom shares an electron with an another atom

• When the two nucleus merge

• When the neutrons leave the nucleus

Tags

NGSS.MS-PS1-1