C1 - Science Homework Booklet - Homework 1-4

Oct 1, 2026

Uploaded by SANS

Science homework booklet for C1 level covering core chemistry and periodic table concepts. Includes atom structure labeling, identifying elements in substances, sorting elements versus compounds using chemical formulas, and matching diagrams for common substances. Additional sections cover simple distillation and how heating/cooling enables separation, plus periodic table history tasks based on Mendeleev’s table. Final pages focus on periodic table structure into groups, identifying element categories, and examining trends in alkali metals using atomic radius graphs and melting/boiling point tables.

LanguageEnglish

CategoryExam

FormatPDF

Pages11

Reading Time28 min

AccessFree to download

Homework 1: Atoms, Elements and Compounds

Atom diagrams and labels

Elements in substances and sorting

Diagram matching for common substances

Homework 2: Distillation

Simple distillation tasks

Extension questions

Homework 3: History of the Periodic Table

Mendeleev’s groups and gaps

Arrangement in today’s periodic table

Homework 3: Structure of the Periodic Table

Groups and element categories

Trends in Group 1 elements

Homework 4: Alkali metal melting and boiling points

HOMEWORK BOOKLET C1 Homework 1 Atoms, Elements and Compounds Atoms are tiny particles which make up all substances and matter. They contain a central nucleus made up of neutral neutrons and positively charged protons. Negatively charged electrons orbit the nucleus. 1. Label the diagram of the atom. Use the words in the box. electron neutron proton An element is made up of only one type of atom. There are around 100 different elements, which can all be found on the periodic table. A compound is formed when two or more different atoms are chemically bonded together. For example, water (H2O) is a compound made up of hydrogen and oxygen atoms. Compounds can be represented by their chemical formula; this shows the number of atoms of each element present in the compound. 2. For each of the substances below, write down the element(s) that it contains. The first one has been done for you. You might find it helpful to use a periodic table for this question. | Name of Substance | Chemical Formula | Element(s) | | --- | --- | --- | | water | H2O | hydrogen and oxygen | | magnesium oxide | MgO | | | carbon | C | | | oxygen | O2 | | | methane | CH4 | | | iron | Fe | | | glucose | C6 H12O6 | | 1 of 2 Homework 1 3. Sort the following substances into the table. Each substance should be written into one column only. The chemical formulae of the substances have been included to help you. aluminium (Al) boron (B) carbon dioxide (CO2) calcium carbonate (CaCO3) copper sulfate (CuSO4) hydrogen (H2) hydrogen peroxide (H2O2) magnesium (Mg) sodium chloride (NaCl) sulfur (S) tin (Sn) zinc oxide (ZnO) | Elements | Compounds | | --- | --- | | | | 4. Match the common substances listed below with the correct diagram. | carbon dioxide CO2 | | --- | | water
H2O | | ammonia
NH3 | | oxygen
O2 | | hydrogen
H2 | | | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Key oxygen carbon hydrogen nitrogen 2 of 2 Homework 2 Distillation Complete the following tasks: Simple distillation is used to separate . Use the words in the box below to label the distillation apparatus. Describe how distillation enabled the solution containing food colouring and water to be separated. Keywords: condenses evaporate cooled heated boiling point | | | --- | | | Extension What would happen if the mixture was heated to a temperature higher than the boiling points of both substances? How could you separate a solution that contained several different liquids? visit [twinkl.com](twinkl.com) Homework 3 History of the Periodic Table Worksheet The element magnesium has 12 electrons. State magnesium’s group number and show how you could prove your answer is correct. Part of Mendeleev’s periodic table is shown below. | Group I | | II | III | IV | V | VI | VII | VIII | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Period 1 | H=1 | | | | | | | | | 2 | Li=7 | Be=9.4 | B=11 | C=12 | N=14 | O=16 | F=19 | | | 3 | Na=23 | Mg=24 | AI=27.3 | Si=28 | P=31 | S=32 | Cl=35.5 | | | 4 | K=39 | Ca=40 | ?=44 | Ti=48 | V=51 | Cr=52 | Mn=55 | Fe=56, Co=59 Ni=59 | | 5 | Cu=63 | Zn=65 | ?=68 | ?=72 | As=75 | Se=78 | Br=80 | | | 6 | Rb=85 | Sr=87 | ?Yt=88 | Zr=90 | Nb=94 | Mo=96 | ?=100 | Ru=104, Rh=104 Pd=106 | | 7 | Ag=108 | Cd=112 | In=113 | Sn=118 | Sb=122 | Te=125 | J=127 | | | 8 | Cs=133 | Ba=137 | ?Di=138 | ?Ce=140 | | | | | | 9 | | | | | | | | | | 10 | | | ?Er=178 | ?La=180 | Ta=182 | W=184 | | Os=195, Ir=197 Pt=198 | | 11 | Au=199 | Hg=200 | Tl=204 | Pb=207 | Bi=208 | | | | | 12 | | | | Th=231 | | U=240 | | | 1. Give the symbols of two elements that Mendeleev placed in group 2 which are not found in group 2 today. 2. Name these two elements. 3. Mendeleev left gaps in his periodic table. Explain why. 1 of 2 Homework 3 4.

FAQs

How do you identify elements and compounds in the worksheet’s substances question?

Elements contain only one type of atom, while compounds contain two or more different atoms chemically bonded. The worksheet asks you to write the element(s) present in each substance and sort items into elements or compounds using their chemical formulas.

What is the purpose of simple distillation in the Distillation section?

Simple distillation separates substances based on differences in boiling and condensation behavior. The worksheet also includes vocabulary for labelling apparatus and asks how a mixture of food colouring and water can be separated.

What does the worksheet ask about Mendeleev’s periodic table?

It asks for elements in a specific group that are not found there today, to name those elements, and to explain why Mendeleev left gaps. It also asks how the modern periodic table is arranged and how it changed over time.

Oct 1, 2026

Uploaded by SANS