NAT SCI 1 MIDTERM QUIZ

1. The smallest particle of element that remain identical to all other particles.. (answer in lower case)

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)

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)

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)

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)

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)