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WorksheetsSCIENCE 7 MATTER, ATOM, SCIENTIFIC MODEL
Total questions: 10
Worksheet time: 5mins
1. Which of the following is NOT a state of matter?
solid
liquid
gas
energy
What is the smallest unit of an element that retains its chemical properties?
atom
compound
molecule
ion
Which of the following best describes a molecule?
A single atom of an element
A group of atoms bonded together
A mixture of substances
A state of matter
Which of these changes represents a phase change from liquid to gas?
melting
freezing
condensation
evaporation
Which phase of matter has no definite shape and no definite volume?
solid
liquid
gas
plasma
Who proposed the "plum pudding" model of the atom?
john dalton
j.j thompson
niels bohr
ernest rutherford
Which scientist discovered the nucleus through the gold foil experiment?
A. Niels Bohr
B. J.J. Thomson
C. Ernest Rutherford
D. Democritus
Which model suggested that electrons move in specific orbits around the nucleus?
A. Rutherford Model
B. Bohr Model
C. Quantum Model
D. Dalton’s Atomic Theory
Which of the following statements about solids is TRUE?
A. Particles in a solid move freely and quickly
B. Solids have a definite shape and volume
C. Solids do not have mass
D. Solids take the shape of their container
Which scientist first proposed the idea that matter is made up of indivisible particles called “atomos”?
A. Aristotle
B. Dalton
C. Democritus
D. Bohr
