Worksheets3.4 -3.5 Exit Ticket
Total questions: 10
Worksheet time: 50mins
Which of the following best describes an isotope?
Atoms of different elements with the same number of protons
Atoms of the same element with a different number of neutrons
Atoms of the same element with a different number of protons
Atoms with the same mass number but different atomic numbers
An atom of carbon-14 has how many neutrons?
6
7
8
14
What is the formula for calculating the average atomic mass of an element?
Protons + Neutrons ÷ Electrons
(Mass of each isotope × its abundance) ÷ 100
Protons × Neutrons × Electrons
Atomic number + Mass number ÷ 2
If an isotope of gold has 79 protons and 119 neutrons, what is its mass number?
79
119
198
210
Why is the average atomic mass of an element usually not a whole number?
Because isotopes have different numbers of protons
Because isotopes are unstable
Because it is a weighted average of all the isotopes
Because it includes electrons in the calculation
Which of the following is the correct order of the electromagnetic spectrum from shortest to longest wavelength?
Radio waves, Microwaves, IR, Visible light, UV, X-rays, Gamma rays
Gamma rays, X-rays, UV, Visible light, IR, Microwaves, Radio waves
UV, Gamma rays, Visible light, IR, Microwaves, Radio waves, X-rays
Visible light, Gamma rays, UV, IR, Microwaves, X-rays, Radio waves
What is the relationship between wavelength, frequency, and energy in the electromagnetic spectrum?
Short wavelength → Low frequency → Low energy
Long wavelength → High frequency → High energy
Short wavelength → High frequency → High energy
Wavelength does not affect energy
The equation c = fλ is used to calculate which property of light?
Speed of sound
Speed of light
Mass of a photon
Gravitational force
Which equation is used to calculate the energy of a photon?
E=mc²
E=hf
F=ma
V=IR
What is the wavelength range of visible light in the electromagnetic spectrum?
100-300 nm
400-700 nm
700-1000 nm
1-10 m
