General Science
What are the three states of matter?
Solid, liquid, gas
What is the unit of force?
Newton (N
What is the smallest particle of an element?
Atom
What organ pumps blood around the body?
Heart
What has keys but can’t open locks?
Piano
What part of the cell controls its activities?
Nucleus
What instrument is used to measure temperature?
Thermometer
Which gas is needed for burning (combustion)?
Oxygen
Which organ helps us breathe by taking in oxygen and removing carbon dioxide?
Lungs
What has hands but can’t clap?
Clock
What force pulls objects toward the Earth?
Gravity
What type of energy does a stretched rubber band have?
Elastic potential energy
What do we call a substance made of two or more elements chemically joined?
Compound
What is the process of breaking down food into small, soluble molecules called?
Digestion
I’m always running, but I never move. What am I?
Time
What do we call a change of state from liquid to gas?
Evaporation
What is the formula for speed?
Speed = Distance ÷ Time
What is the pH of a neutral solution?
7
What type of blood cells fight diseases?
White blood cells
I am light as a feather, yet the strongest person can’t hold me for long. What am I?
Breath
What is the word equation for photosynthesis?
Carbon dioxide + Water → Glucose + Oxygen
What type of lens is used in a magnifying glass?
Convex lens
Which method separates a dissolved solid from a liquid by heating?
Evaporation (or distillation)
What is the name of the green pigment in plants that helps photosynthesis?
Chlorophyll
The more of me you take away, the bigger I get. What am I?
A hole