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Yr 9 Elements, Compounds, and Mixtures definitions Flashcards | StudBud
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Yr 9 Elements, Compounds, and Mixtures definitions
Yr 9 Elements, Compounds, and Mixtures definitions
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Review of our current year 9 chemistry lesson. #elements #compounds
Flashcards
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Questions
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Answers
1
A neutral group of two or more atoms held together by bonds.
element
mixture
atom
molecule
2
I would describe pure oxygen gas as a
solution
mixture
compound
element
3
An element is made of many different atoms.
True
False
4
Elements are always made up of molecules.
True
False
5
An element is composed of only one type atom.
True
False
6
Which of the following represents a chemical formula of a compound?
H2O
Fe
Au
A2 + B2 = C2
7
A compound is
a mixture in which the parts cannot be differentiated.
composed of 2 or more elements chemically combined.
a mixture in which the different parts are easily sperated
8
A magnet pulls out black particles from a black-yellow powder. Therefore the powder is
a mixture
a compound
an atom
an element
9
A pure substance that cannot be broken down into smaller parts, only one type of atom.
water
compound
mixture
element
10
A mixture is:
2 or more substances that are not chemically combined.
many of the same atoms combined.
composed of 2 or more seperate elements, chemically combined
11
Which of the following is a compound?
N
Ne
KCl
O
12
Which of these is an element?
NaCl
NaB
NaI
Na
13
A substance which is made up of two or more elements chemically combined is known as
a substance
an atom
a compound
a molecule
14
Which of the following is a pure substance?
salt water
salad dressing
water
black ink
15
magnesium oxide is a
silver solid
white solid
white gas
black solid
16
A mixture is a pure substance.
True
False
