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i need your help!! about Chemistry (15 point!!)

1. The number of each kind of atom of the molecules involved in a reaction will NOT change as reactants form into products

a.True

b.False


2. Which of the following properties do Alkali Metals and Alkali Earth Metals have in common?

a.high melting points

b.low density

c.low melting points

d.malleable (can easily be bent)


3.The Law of Conservation of Mass states that (in a closed system) matter is neither created nor destroyed.

a.True

b.False


4.On the periodic table, elements with similar properties are arranged in ________________

a.In Periods

b.In Groups

c.By Color

d.By Symbol

5.On the periodic table, elements with similar properties are arranged in ________________

In Periods

In Groups

By Color

By Symbol

Sagot :

1. I think it is true?
2. Low melting points
3. True
4. Atomic number, I think it’s periods?
5. Groups?


Sorry, I might not get all of them right :(


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