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Chemistry Fundamentals Flashcards | StudBud

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Chemistry Fundamentals

18 terms·StudBud Administration·47 plays

Test your knowledge on the basic concepts of chemistry, including elements, mixtures, and subatomic particles

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Questions 18

Answers

1
True or false: Electrons orbit the nucleus.
True
False
2
Isotopes differ in what?
Electron arrangement
Neutrons
Chemical properties
Protons
3
Which particles are negatively charged?
Isotopes
Protons
Neutrons
Electrons
4
Subatomic particles in oxygen?
P=7, N=8, E=8
P=8, N=8, E=8
P=8, N=9, E=8
P=8, N=8, E=9
5
What sums up to atomic mass?
Protons + Electrons
Protons + Neutrons
Protons only
Electrons + Neutrons
6
True or false: Isotopes are charged.
True
False
7
What defines a pure substance?
Natural material
Element mix
Compound combo
Fixed composition
8
Why isn't atomic mass always whole?
Isotope abundance
Rounding errors
Measurement error
Atomic decay
9
Who proposed the Cherry Model?
Bohr
Rutherford
Chadwick
Thomson
10
True or false: Elements can be simplified.
True
False
11
Average atomic mass of isotopes?
10.9 amu
11.0 amu
10.1 amu
10.5 amu
12
What do elements consist of?
Artificial atoms
Different atoms
Identical atoms
Compound atoms
13
What does '12' signify in Carbon-12?
Atomic number
Protons number
Electrons number
Mass number
14
Mixtures can be separated how?
Chemical reaction
Physical means
Cannot separate
Permanent bond
15
Which mixture never settles?
Homogeneous
Heterogeneous
Suspension
Colloid
16
Distillation separates by what property?
Boiling point
Density
Color
Viscosity
17
What identifies an element?
Neutrons number
Atomic mass
Electrons number
Protons number
18
Which is a homogeneous mixture?
Salad
Gasoline
Cereal and milk
Oil and water