FS Standard 4 Review Question Preview (ID: 40100)


Standard 4 Concepts. TEACHERS: click here for quick copy question ID numbers.

An example of a compound is..
a) salt
b) salt water
c) sodium
d) soft drinks

An example of an element is ..
a) air
b) iron
c) sugar
d) water

The number of electrons in the second shell(or orbital) that makes an atom happy and chemically stable is...
a) 1
b) 2
c) 4
d) 8

The number of electrons in the first shell(or orbital) that makes an atom happy and chemically stable is..
a) 1
b) 2
c) 4
d) 8

Which one involves a chemical change?
a) sweetening ice tea
b) tossing a salad
c) combining baking soda and vinegar
d) combining salt and water

Covalent bonds are formed when..
a) two atoms, usually nonmetals, share an electron
b) an electron is transferred
c) opposite charges attract atoms to each other
d) you add glue to atoms

Chewing food would be an example of a..
a) physical change
b) chemical change
c) both physical and chemical change
d) neither physical or chemical

In food preparation, an example of a physical change is..
a) toasting bread
b) freezing juice in popsicle containers
c) grilling meat
d) baking a cake

Which is an example of a chemical change occurring during food storage?
a) potatoes sprouting
b) brown sugar hardening
c) crackers staling
d) honey sugaring

What is an example of a reversible physical change?
a) change in odor
b) chopping
c) rusting
d) phase change

An atomic mass unit equals..
a) the sum of the masses of protons and neutrons in an atom
b) the mass of one proton or neutron
c) the number of protons in the nucleus of each atom
d) the mass of an electron

The 2 in CO2 means ___ are present.
a) 2 elements of cobalt
b) 2 molecules of carbon
c) 2 carbon dioxide atoms
d) 2 oxygen atoms

the chemical symbol for potassium is..
a) P
b) Po
c) K
d) Fe

A physical change..
a) is always permanent
b) is changing from one state of matter to another
c) involves changing the molecular structure of things
d) all of these

An example of a solute(something that dissolves)is...
a) steam
b) water
c) sugar
d) all of these

The smallest subatomic particle is a(n)..
a) electron
b) atom
c) neutron
d) proton

An example of a heterogenous mixture is
a) cola
b) iced tea
c) tossed salad
d) salt

An example of a homogenous mixture is..
a) cola
b) tossed salad
c) veggie soup
d) italian dressing

So the atomic number of Carbon is 6 and the atomic mass is 12.011. How many protons and electrons does Carbon have?
a) 1
b) 6
c) 12
d) 18

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