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WorksheetsNAT SCI 1 MIDTERM QUIZ
Total questions: 20
Worksheet time: 13mins
1. The smallest particle of element that remain identical to all other particles.. (answer in lower case)
(a)
The state of matter in which molecules are at random motion giving the matter to assume the shape of the container and property of having no definite volume.
plasma
solid
gas
liquid
3. is a physical science which deals with the study of the composition and
structure of matter, and the accompanying changes when they react with each other. (answer in lower case)
(a)
4. it is the state of matter at which its molecules are at rest or touching each other. It has a definite volume and shape. (answer in lower case)
(a)
5. The process whereby a substance transforms from the liquid state to the gaseous state. The transformation occurs at the boiling temperature of the liquid. (answer in lower case)
(a)
6. The four states of matter.
solid, compound, mixture, liquid
pure substance, mixture, gas, liquid
solid, liquid, plasma, mixture
gas. liquid, solid, plasma
7. The process whereby a solid substance transforms from the solid state to the liquid state. (answer in lower case)
(a)
8. Which of the following materials is a pure substance?
Salad
Paint
Carbon Dioxide
Sand
9. are made when atoms of different elements are chemically combined
together.
mixtures
compounds
pure substances
10. The central part of an atom consists of neutrons and protons. (answer in lower case)
(a)
11. The quantity of heat required when substance transforms from the gaseous state to liquid state.
latent heat of vaporization
latent heat of fusion
latent heat of sublimation
latent heat of liquifaction
12. negatively charged particles that orbit around the nucleus of an atom.
neutrons
protons
electrons
13. An element contains different types of atoms in its molecule.
True
False
14. In a free atom, the number of protons is equal to the number of electrons.
TRUE
FALSE
15. The electrons of an atom are attracted to the protons in an atomic nucleus by
magnetic force
electromagnetic force
attractive force
repulsive force
16. Under certain circumstances the repelling electromagnetic force becomes stronger than the nuclear force, and nucleons can be ejected from the nucleus, leaving behind a different element: _________ resulting in __________.
nuclear fission, nuclear fission
nuclear decay, nuclear transmutation
nuclear transmutation, nuclear fission
nuclear decay, nuclear fusion
18. The process whereby a substance transforms from the solid state to the gaseous state without passing the liquid state. (answer in lower case)
(a)
18. The latent heat of vaporization of water at 100 degrees celsius is (a) calories per gram. (answer is an integer)
19. The number of electrons in a Hydrogen atom.
1
2
3
4
20. The atoms in the element Oxygen are the same as the atoms in the element Hydrogen.
True
False
