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1.
11.
Which of the following is correctly matc
Nitrogen: Element: Nitrous Oxide: Compound
Iron: Element: Rust: Compound
III.
Mercury: Element: Copper: Compound
IV.
Oxygen: Element: Water: Compound
a.
1, II, III, IV b.
1, II, III only
C.
1, II, IV only
d.
I and II only
10.
Sodium is a silvery solid that reacts violently with water and chlorine. When they combine to form the
compound sodium chloride known as salt, there is a fundamental change in the properties. Salt is often added
food when cooking and it is safe to eat. Which of the following statements supports the idea presented?
a.
b.
True to all compounds, they no longer have the properties of the elements that makes them up.
True to some compounds, it maintains the properties of the elements that makes them up.
C.
True in all elements, it maintains its properties even after it combines with other elements.
d.
True to all elements, they have the properties after they are combined
11.
Which of the following is substance compound?
a.
alloy
b.
gold
c. iron
d.
silver
12.
Which of the following is an element?
a.
oxygen
b.
gun powder
C.
salt
d.
water


Sagot :

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