Elements And Compounds - Part 2 Question Preview (ID: 34362)


CBA 2 Review - TEKS 6.5A, 6.5B, And 6.5C. TEACHERS: click here for quick copy question ID numbers.

Elements are made up of a uniform composition
a) true
b) false
c)
d)

A compound can never be a uniform composition
a) true
b) false
c)
d)

One difference between elements and compounds is that an element consists of only one type of matter, while a compound consists of two or more types.
a) True
b) False
c)
d)

Which one of these elements is NOT one of the three most abundant elements in plants and animals?
a) hydrogen
b) oxygen
c) iron
d) carbon

Which two elements make up the majority of all oceans on Earth?
a) oxygen and hydrogen
b) hydrogen and carbon
c) oxygen and nitrogen
d) nitrogen and carbon

Nitrogen is a major component of living things on Earth
a) True
b) False
c)
d)

One difference between elements and compounds is that an element consists of only one type of matter, while a compound consists of two or more types.
a) True
b) False
c)
d)

All of the following are characteristic of neon. Which characteristic makes it an element?
a) colorless gas
b) relatively rare on Earth
c) made of one type of atom
d) a compound of two or more atoms that have been chemically combined.

Which of these phrases would you use to describe a substance but NOT a mixture
a) blend of compounds
b) pure, uniform throughout
c) form of matter
d) none of the above

What is a substance that can't be broken down into simpler substances?
a) compound
b) element
c) mixture
d) solution

The Earth's crust is primarily made up of which two elements?
a) nitrogen and hydrogen
b) oxygen and carbon
c) silicon and oxygen
d) hydrogen and silicon

Which element makes up most of the Earth's atmosphere?
a) nitrogen
b) hydrogen
c) oxygen
d) carbon

One difference between elements and compounds is that there are an infinite number of elements, but only a limited number of compounds.
a) True
b) False
c)
d)

Is NaCl an element or a compound?
a) element
b) compound
c) neither
d) both

What type of substance is Au (gold)
a) element
b) compound
c) neither
d) both

Elements are represented by chemical symbols. How many letters are in the chemical symbols of elements?
a) only one
b) always two
c) sometimes one, sometimes two
d) as many as you want

Which list contains elements that make up most living things on Earth?
a) hydrogen, oxygen and silicon
b) oxygen, sulfur, and carbon
c) carbon, hydrogen, and oxygen
d) sulfur, helium, and nitrogen

Which two elements primarily make up the Earth's atmosphere?
a) nitrogen and hydrogen
b) silicon and helium
c) oxygen and nitrogen
d) nitrogen and helium

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