Periodic Table & Changes
What is an element?
A pure substance made of only one type of atom
What is the male gamete called?
Sperm
What is a gene?
A unit of hereditary information
What happens to blue litmus paper in an acid?
It turns red
What movement of Earth causes day and night?
Rotation
What is the symbol for Helium?
He
What is the female gamete called?
Ovum (egg)
Where are genes found?
On chromosomes
What happens to red litmus paper in a base?
It turns blue
What movement of Earth takes one year?
Revolution
Is melting a popsicle a physical or chemical change?
Physical change
Where does fertilization occur?
Fallopian tube
What is the correct order from smallest to largest: chromosome, gene, nucleus?
Gene → Chromosome → Nucleus
What happens to litmus paper in a neutral solution?
No change
During a solar eclipse, what is between the Earth and Sun?
The Moon
Name ONE sign of a chemical change.
Colour change / gas produced / heat or light produced / new smell / precipitate
What organ is where a fertilized egg implants and grows?
Uterus
Which contraceptive method also helps prevent STBBIs?
Condoms
A liquid turns red litmus paper blue. Is it an acid, base, or neutral?
Base
What moon phase is fully illuminated?
Full moon
What is the difference between a physical and chemical change?
A physical change does not create a new substance, while a chemical change does
Put these stages in order: fetus, embryo, zygote.
Zygote → Embryo → Fetus
Name ONE way to help prevent STBBIs.
Using condoms / getting tested / limiting partners / communication
A liquid turns blue litmus red and red litmus stays red. What is it?
Acid
Explain why we have different seasons on Earth.
Earth is tilted on its axis and different hemispheres receive different amounts of sunlight as Earth revolves around the Sun