Grade 10 · Science · Chemistry

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

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Why salt, sugar and copper behave differently

Grade 10 Science Worksheet - Challenge Me

NameDate

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

Copper melts at 1084.62 °C and sugar at 185.5 °C. In kelvins, how many times higher is copper's melting point, to 0.01, Ari?
Table salt melts at 800.7 °C and sugar at 185.5 °C. In kelvins, how many times higher is salt's melting point, to 0.01, Bo?
Copper melts at 1084.62 °C and table salt at 800.7 °C. In kelvins, how many times higher is copper's melting point, to 0.01, Esme?
4.
What is broken when salt melts but not when sugar melts, Jun?
- Attractions between ions
- Bonds inside water molecules
- Electron seas
5.
Why does a copper pan spread heat well, Kira?
- Its free electrons carry energy
- Its ions are locked firmly in place
- It is made of molecules
6.
Why does sugar melt at a lower temperature than salt, Luz?
- Its molecules attract weakly
- Its ions attract strongly
- It has an electron sea
7.
Milo says every solution in water conducts electricity. Agree or disagree?
- Disagree: sugar water doesn't
- Agree: dissolving makes ions
- Agree: water carries the current
8.
Pia says solid salt conducts because it is made of ions. Agree or disagree?
- Agree: ions carry current
- Disagree: its ions can't move
- Agree: salt is a metal
9.
Which of these is best for electrical wires, Ren?
- Table sugar
- Table salt
- Copper
10.
Which substance melts easily on a kitchen stove, Zee?
- Copper
- Table sugar
- Table salt

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

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

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

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.

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.

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