★ Atoms and Radioactivity Quiz
An isotope of an element has the same number of _________, but a different number of _________.
A. Protons, electrons
B. Protons, neutrons
C. Electrons, neutrons
D. Neutrons, protons
Select your answer:
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Joints › ViewThe joint in your knees is most similar to:
A. The pendulum in a grandfather clock
B. The wheels on an office chair
C. The sliding mechanism on a drawer
D. The hinge on a cupboard door
Reproduction › View
That fusion of the male and female gamete to form a zygote is known as ?
A. fertilisation
B. menstruation
C. pollination
D. ejaculation