Sem 1 Exam Review 2 Question Preview (ID: 35041)


Semester 1 Review 2. TEACHERS: click here for quick copy question ID numbers.

When water goes from liquid to solid -
a) freezing
b) sublimation
c) evaporation
d) melting

What two elements are found in covalent compounds?
a) nonmetals and nonmetals
b) metals and metals
c) metals and nonmetals
d) metals and metalloids

What two elements are found in ionic compounds?
a) metals and nonmetals
b) metals and metals
c) metals and metalloids
d) nonmetals and nonmetals

Which of the following is a covalent compound
a) CO2
b) Fe2O3
c) K2O
d) Li2O

Near the ceiling of a room the air is warmer. The warm air rises because of -
a) convection
b) conduction
c) electricity
d) radiation

Which scientist used gold foil to find the structure of an atom?
a) Rutherford
b) Bohr
c) Thomson
d) Chadwick

Which of the following are true about the modern model?
a) electrons are in a 3D orbit
b) the atoms is made of imaginary space
c) the atom is a solid ball
d) electrons are in a set orbit like planets around the sun

Which of these is neither an acid or a base?
a) pH 7
b) pH 1
c) pH 3
d) pH 11

Which is the strongest base?
a) pH 14
b) pH 3
c) pH 7
d) pH 11

Which equation is not balanced?
a) H2 + O2 - 2H2O
b) 2 Na + Cl2 - 2NaCl
c) CaCO3 - CaO + CO2
d) Fe2O3 + H2 - 2Fe + 3H2O

Which of the following is an exothermic equation?
a) AB - A + B + energy
b) A + B + energy - AB
c) energy
d) solid

Which subatomic particles has equal mass?
a) proton and neutrons
b) protons and electrons
c) electrons and neutrons
d) protons and nucleus

What is the product? MgCO3+ 2HCl - MgCl2 + H2CO3
a) MgCl2 + H2CO3
b) MgCO3 + 2HCl
c) MgCl
d) HCl

Which element will lose valance electrons?
a) Na
b) O
c) F
d) Ne

What happens when water freezes?
a) the molecules slow down until the bond together
b) The molecules speed up escape phase
c) molecules squeeze together
d) form irregular shape

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