Recap of Year 10 Chemistry

The Atom

100

This subatomic particle has a positive charge and is found in the nucleus.

Proton 

200

These negatively charged particles travel around the nucleus

electron

300

This part of the atom contains both protons and neutrons

nucleus

400

This subatomic particle has no electrical charge

neutron

500

What is the name of the part of the atom where electrons are found?

Electron shells

Elements and the Periodic Table

100

A substance that contains only one kind of atom

element

200

The number that tells us how many protons are in the nucleus of an atom

atomic number

300

These horizontal rows of the periodic table contain elements with the same number of shells

periods

400

The number that tells us the total number of protons and neutrons in an atom

Mass number

500

These vertical columns in the periodic table contain elements with the same number of electrons in their outer shell

groups

Molecules and Compounds

100

A group of atoms bonded together is called a...

molecule

200

A molecule that contains atoms from two or more different elements is called a...

Compound

300

The study of matter, what it's made of, and how it reacts with other matter

Chemistry

400

The process in which different types of atoms join and form new substances

chemical reaction

500

The combination of chemical symbols and numbers that show the elements that make up a compound is called the...

chemical formula

Acids

100

The pH range of acids

0 to 7

200

The taste characteristic of acids

sour

300

Acids will cause blue litmus paper to turn this color

red

400

These ions are formed when acids are dissolved in water

Hydrogen ions (H⁺)

500

What is the chemical formula for sulfuric acid?

H₂SO₄

Bases

100

The pH range of bases

7 to 14

200

The taste characteristic of bases

bitter

300

Bases will cause red litmus paper to turn this color

blue

400

These ions are formed when bases are dissolved in water

Hydroxide ions (OH^-)

500

What is the chemical formula for the base sodium hydroxide?

NaOH

Chemical bonds and reactions

100

An atom that has gained or lost an electron and has an electrical charge is called an...

ion

200

This type of bond forms when positively and negatively charged ions attract each other

ionic bond

300

This type of bond occurs when atoms share pairs of electrons

Covalent bond

400

Give 2 examples of compounds containing ionic bonds

sodium chloride (NaCl), potassium chloride (KCl), sodium sulfate (Na₂SO₄), sodium carbonate (Na₂CO₃) etc... lots of options

500

When an acid and a base react together, they produce these two things.

water and a salt