Particles of Matter

The smallest part of an element that still has the properties of that element is called ...

A combination of two or more atoms bonded together is called ...

A pure substance that can be broken down into other substances by chemical reactions is called ...

Which of the following is an element?

An atom that is electrically charged because it has lost or gained electrons is called ...

One molecule of water (H2O) is made up of ...

Look at these substances! (1) Iron. (2) Water. (3) Air. (4) Table salt. The ones that are compounds are shown by numbers ...

Which of the following chemical formulas represents a compound?

A mixture whose particles are evenly mixed and can no longer be distinguished is called a ... mixture.

The part of an atom that is positively charged is ...

A positive ion (cation) forms when an atom ...

Oxygen gas in the air consists of two identical oxygen atoms, so it is classified as ...

The total number of atoms in the compound Ca(OH)2 is ...

The difference between a compound and a mixture is ...

Look at these formulas! (1) H2O (2) CO2 (3) O2 (4) NaCl. The ones that are molecules of compounds are shown by numbers ...

An atom has 11 protons, 12 neutrons, and 11 electrons. If the atom loses one electron, the particle formed is ...

Water can be broken down into hydrogen gas and oxygen gas by electrolysis, while a mixture of water and sand can be separated by filtering. This difference occurs because ...

When sugar is dissolved in water, the sugar is no longer visible but the sweet taste remains and no new substance forms. This shows that ...

Particle X has 8 protons, 8 neutrons, and 10 electrons. Particle X is ...

Look at these statements! (1) Made of two or more types of atoms. (2) Can be separated physically. (3) Its components have a fixed ratio. (4) The properties of the original substances are still visible. The characteristics of a mixture are shown by numbers ...