ཚན་རིགScienceKids, ages 11 to 14English

Matter and materials

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Questions

1Multiple choice · 20 s · 10 ptsNot played yet
In which state of matter are the particles packed tightly together in a fixed, regular pattern?
- ASolid
- BLiquid
- CGas
- DPlasma
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2Multiple choice · 20 s · 10 ptsNot played yet
The ice in the picture is turning into liquid water. What is this change of state called?
- AFreezing
- BCondensing
- CMelting
- DEvaporating
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3Multiple choice · 20 s · 10 ptsNot played yet
Why do drops of water form on the outside of the cold glass in the picture?
- AWater vapour in the air condenses
- BWater leaks through the glass
- CThe glass itself is melting
- DThe cold makes new water appear
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4True or false · 20 s · 10 ptsNot played yet
A gas can be squashed into a smaller space much more easily than a solid.
- ✓True · བདེན།
- ✕False · རྫུན།
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5Multiple choice · 20 s · 10 ptsNot played yet
Which metal is a liquid at room temperature?
- AIron
- BMercury
- CAluminium
- DCopper
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6Multiple choice · 30 s · 10 ptsNot played yet
On a sunny day, water in a puddle slowly turns into a gas and the puddle dries up. What is this process called?
- ACondensation
- BEvaporation
- CMelting
- DFreezing
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7True or false · 20 s · 10 ptsNot played yet
The big bubbles in boiling water are filled with air.
- ✓True · བདེན།
- ✕False · རྫུན།
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8Multiple choice · 20 s · 10 ptsNot played yet
An element is a substance made of only one type of what?
- AMolecule
- BMixture
- CCell
- DAtom
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9Multiple choice · 20 s · 10 ptsNot played yet
Which scientist published an early periodic table in 1869 and left gaps for elements not yet discovered?
- ADmitri Mendeleev
- BMarie Curie
- CIsaac Newton
- DAlbert Einstein
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10Multiple choice · 20 s · 10 ptsNot played yet
What is the chemical symbol for iron?
- AIr
- BI
- CIn
- DFe
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11Multiple choice · 20 s · 10 ptsNot played yet
The shiny yellow metal in the picture has the chemical symbol Au. What is it?
- ASilver
- BAluminium
- CCopper
- DGold
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12Multiple choice · 20 s · 10 ptsNot played yet
Which element has the chemical symbol Na?
- ANitrogen
- BNickel
- CSodium
- DNeon
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13Multiple choice · 20 s · 10 ptsNot played yet
What does the formula H2O tell us about a water molecule?
- ATwo hydrogen atoms, one oxygen atom
- BTwo oxygen atoms, one hydrogen atom
- CIt has two water atoms
- DA mixture of two gases
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14Multiple choice · 20 s · 10 ptsNot played yet
Which of these is a mixture, not a compound?
- AWater
- BAir
- CCarbon dioxide
- DTable salt
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15Multiple choice · 20 s · 10 ptsNot played yet
What do you make when sugar dissolves completely in water?
- AA compound
- BA new element
- CAn alloy
- DA solution
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16True or false · 20 s · 10 ptsNot played yet
If you leave salty water to evaporate, the salt is left behind.
- ✓True · བདེན།
- ✕False · རྫུན།
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17Multiple choice · 30 s · 10 ptsNot played yet
The filter paper in the picture lets water through but holds back the sand. What is this method of separating called?
- AEvaporation
- BDistillation
- CFiltration
- DCondensation
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18Multiple choice · 20 s · 10 ptsNot played yet
Lemon juice and vinegar taste sour. What type of substance are they?
- AAlkalis
- BAcids
- CNeutral substances
- DMetals
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19True or false · 20 s · 10 ptsNot played yet
Melting ice is a chemical change that cannot be reversed.
- ✓True · བདེན།
- ✕False · རྫུན།
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20Multiple choice · 20 s · 10 ptsNot played yet
The old iron chain in the picture is covered in orange-brown rust. What two things did the iron react with?
- ASand and salt
- BSunlight and carbon
- CWater and oxygen
- DNitrogen and heat
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