Families of elements and their properties
Grade 10 Science Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.
PubChem lists sodium's melting point as 370.95 K and potassium's as 336.53 K. How many kelvins lower is potassium's, Bo?
PubChem lists potassium's melting point as 336.53 K and cesium's as 301.59 K. How many kelvins lower is cesium's, Esme?
Using the table, what happens to melting points going down group 1, Jun?
- They fall
- They stay the same
- They rise
Using the table, which alkali metal has the lowest density, Kira?
Use the picture in question 3.
- Cesium
- Rubidium
- Lithium
Using the table, which alkali metal melts at the lowest temperature, Luz?
Use the picture in question 3.
- Lithium
- Cesium
- Sodium
What is the family name for group 1 metals, Milo?
- Noble gases
- Halogens
- Alkali metals
Magnesium and calcium belong to which family, Pia?
- Alkali metals
- Alkaline earth metals
- Halogens
How many valence electrons does each alkali metal have, Ren?
- 1
- 7
- 2
How many valence electrons does each halogen have, Tala?
- 1
- 7
- 17
Why are neon and argon in the same family, Zee?
- Both have full outer shells
- Both are metals
- Both have 18 protons in the nucleus

