Grade 10 · Science · Chemistry

10th grade Why salt, sugar and copper behave differently worksheet

6 printable versionsBuilding Confidence10 questions · answer keyFree · no account

Level: Building Confidence · On Level · Challenge Me

When it’s done, scan the sheet with your phone and PencilGo marks it and picks the next one. Create a free account

Version

Why salt, sugar and copper behave differently

Grade 10 Science Worksheet - Building Confidence

NameDate

Circle the best answer, or write your answer on the line.

Table salt melts at 800.7 °C and sugar at 185.5 °C (CRC). How much higher is salt's melting point, Ari?
Copper melts at 1084.62 °C and table salt at 800.7 °C. How much higher is copper's melting point, Bo?
Read this first
Dot diagram beside a property table
Salt (ions), sugar (shared pairs) and copper (an electron sea) (CRC Handbook via PubChem). Columns: substance, bonding, melting point (°C), conducts as a solid?, conducts melted or dissolved?. table salt, NaCl, ionic, 800.7, no, yes; table sugar, sucrose, covalent molecules, 185.5, no, no; copper, metallic, 1084.62, yes, yes, when melted.
3.
Using the table, which substance melts at the lowest temperature, Jun?
- Copper
- Table sugar
- Table salt
4.
Using the table, which conducts electricity as a solid, Kira?
- Table salt
- Table sugar
- Copper
5.
Using the table, what kind of bonding does table salt have, Luz?
- Ionic
- Covalent molecules
- Metallic
6.
Why does a copper wire conduct electricity, Milo?
- Its electrons can move
- It is shiny and smooth
- It dissolves
7.
Why doesn't solid table salt conduct electricity, Noah?
- Salt contains no ions of any kind
- Its ions are locked in place
- It is too soft
8.
What happens when a salt crystal is struck hard, Ren?
- It stretches into a wire
- It bends
- It shatters
9.
Why can copper be drawn into thin wire, Tala?
- Its ions repel each other and crack
- Its ions slide in the electron sea
- It is made of molecules
10.
Why do ionic crystals crack instead of bending, Zee?
- They are too cold
- Shifted layers push like charges together
- They have no bonds

10th grade Why salt, sugar and copper behave differently worksheet – printable — Print: 1 2 3 4 5 6

About this worksheet

Why salt, sugar and copper behave differently. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

I can explain why salt, sugar and copper melt, conduct and break differently, from the forces between their particles.
I can say that ionic solids conduct only when melted or dissolved, and that sugar water doesn't conduct.
I can identify a solid's bonding from its properties.
I can compute masses from densities and compare melting points in kelvins.

Standard: HS-PS1-3

Words to know

brittle: Breaks or shatters instead of bending

conduct: Let electric charge flow

ductile: Able to be drawn into wire

molecular solid: A solid of separate covalent molecules, like sugar

ionic solid: A solid lattice of ions, like salt

Common mistakes

Your child added the melting points. How much higher one is than another is a difference: subtract.

Your child divided. Mass = density × volume.

Your child divided Celsius readings. Ratios of temperatures need kelvins: add 273.15 to each first.

Questions parents ask

What is the most common mistake with why salt, sugar and copper behave differently?

Your child added the melting points. How much higher one is than another is a difference: subtract.

Are these 10th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

More chemistry

See all Chemistry

Every sheet you scan goes into your child’s record: dated, marked and ready for the year-end portfolio. Homeschool records