Science exam

1. 1Which of these statements are part of the particle theory of matter

   1. AAll matter is made up of tiny particles that have space between them
   2. BAll particles are still
   3. CDifferent substances are made up of different types of particles
   4. DParticles are in constant motion
   5. EParticles repel each other
   6. FParticles attract each other
   7. GThe particles of a substance move faster as the temperature increases
2. 2A pure substance is a substance that is made up of [blank_start]one type of[blank_end] particle

   1. Aone type of
3. 3A mixture is a substance made up of [blank_start]more than one type of particle[blank_end] . A mechanical mixture is a mixture that is distinguishable, while a solution is a mixture that is uniform

   1. Amore than one type of particle
   2. Bmade up of only one type of particle
4. 4How can you tell if a liquid or gas is pure

   1. APure gases and liquids are buoyant
   2. BPure liquids and gases are clear
   3. CPure liquids and gases have a density of less than 3cm cubed
5. 5Alloys are a liquid solution if metals

   1. AVerdadero
   2. BFalso
6. 6Which are physical properties?

   1. AThe gas smells like boiled egg
   2. BThe detergent is pink
   3. CThe water is made up of two hydrogens and one oxygen
   4. DThe tea is hot
7. 7Which are the qualitative physical properties

   1. AThe grass is green
   2. BThe tea is 63 degrees hot
   3. CThe rock feels rough
   4. DThe stone is as big as my palm
8. 8Which are quantitative physical properties?

   1. AThe grass is 3 cm long
   2. BThe tea is green
   3. CThe cat is as tall as my fore arms
   4. DThe grass is green
   5. EThe boiling water is at 101 degrees
9. 9Which are physical properties

   1. ALustre
   2. BClarity
   3. CBrittleness
   4. DViscosity
   5. EDensity
   6. FMalleability
   7. GDuctility
   8. HConductivity
   9. IALL OF THE ABOVE
10. 10Physical change is a change in wishing the composition of the substance is not altered and no new substances are produced

    1. AVerdadero
    2. BFalso

11. 11Melting ice to water is a chemical change

    1. AVerdadero
    2. BFalso
12. 12A chemical property is a feature of a substance that is determined when the composition IS changed and one or more new substances are produces

    1. AVerdadero
    2. BFalso
13. 13What's a chemical change

    1. AA change in the composition of the substance
    2. BA change in the appearance of a substance
    3. CA change of a chemical In a substance
14. 14You can tell a chemical change has occurred if...

    1. AThere is a change of color
    2. BThere is a descrease in size or amount
    3. CThere is a change of odour
    4. DYou see bubbles (not by heating)
    5. EIt feels different
    6. FA new solid is seen (precipitates)
    7. GChange in temperature or light
    8. HChange in the way it looks
15. 15Density is how tightly packed the molecules are

    1. AVerdadero
    2. BFalso
16. 16The equation for calculating density is: v/m

    1. AVerdadero
    2. BFalso
17. 17Label this Bohr Rutherford diagram of the atomic structure

    

    1. ACa
    2. Bcalcium
    3. C40
    4. D40.08
    5. E20
    6. F2
18. 18Label this Bohr Rutherford diagram of the atomic structure

    1. ACa
    2. Bcalcium
    3. C40
    4. D40.08
    5. E20
    6. F2
19. 19The order of electrons that go in the rings of a Bohr Rutherford diagram is 282

    1. AVerdadero
    2. BFalso
20. 20Cereal is a..

    1. AMechanical mixture
    2. BSolution
    3. CPure substance
    4. DAlloy
21. 21Name the guess method

    

    1. Agiven
    2. Bu know
    3. Cequation
    4. Dsolution
    5. Estatement
22. 22Label the groups of the periodic table

    

    1. AAlkali metals
    2. BAlkaline earth metals
    3. Crare earth metals
    4. Dtransition metals
    5. Ehalogens
    6. Fnoble gases
23. 23What's a molecular element?

    1. Ahas more than one atom
    2. BHas more than one atom of the same element
    3. CHas only one atom
24. 24A molecular compound is a molecule consisting of

    1. ATwo or more different elements
    2. BTwo different elements
    3. CAll the same elements
25. 25An ion is a particle that has either a positive or negative charge, Cation is positively charged and anion is negatively charged

    1. AVerdadero
    2. BFalso
26. 26Study this pic and choose true so u don't lose marksnthis is not a question

    

    1. AVerdadero
    2. BFalso
27. 27Ions move to either element from the molecular compound based on the number of outermost electrons in the diagram, so if the outer most of the other element of five or more than the ion will stay, if it's four or less than the ion will go

    1. AVerdadero
    2. BFalso
28. 28What's an ionic compound?

    1. AA compound that has positive and negatively charged ions
    2. BChocolate cake
29. 29Atoms combine to become more stable

    1. AVerdadero
    2. BFalso
30. 30Why are combined atoms considered to be more stable

    1. ABecause they would have more electrons in the outermost orbit
    2. BBecause the combination makes the atom bigger
    3. CBecause it makes the nucleus stronger and more dense with neutrons
31. 31This is covalent bonding of two elements ( choose false so you don't lose marks)

    

    1. AVerdadero
    2. BFalso
32. 32What is viscosity?

    1. AResistance of flow by fluids
    2. BThe size of the particles
    3. CThe thickness of a fluid
33. 33What are precipitates?

    1. AA solid that seperates from a solution
    2. BSpraying water on to a solution
    3. CRain and snow and hail
34. 34These are the HHOS symbols remember and choose true so you don't lose marks

    

    1. AVerdadero
    2. BFalso

Descripción

Test sobre Science exam, creado por farah amer el 21/01/2017.

Autor

farah amer

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English

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