13. It can be broken down into a simpler type of matter by chemical means. It has unique properties that are different from the properties of its individual element. It is composed of atoms of two or more elements that bind together. It is composed of atoms of the same kind. A. ||,|||,|V. B. |,||,||| only. C. |,||,|V only. D. ||,|||,|V only.
MULTIPLE CHOICE; Choose the letter of the best answer. Write your answer on the space provided before the number.
1. What is the last step in the scientific method?
a. Writing a report
b. Collecting data
c. Analyzing data
d. Drawing conclusions
2. Why is an experiment important?
a. Helps create jobs for scientists
b. Creates more questions to be answered
c. Ensures that many tools are used safely and accurately
d. Allows for new discoveries and knowledge in science
3. Why is the scientific method an important process in doing experiments?
a. It takes more work but it is worth it
b. It helps the experiment to take longer and be better
c. It ensures that the results can be trusted and repeated
d. It ensures that the people doing the experiments are scientific
4. What skill is involved when you use fine senses to gather information?
a. Observing
b. Posing questions
c. Developing hypothesis
d. Designing experiments
5. Which step follows formulating and objectively testing hypotheses?
a. Interpreting results
b. Stating conclusions
c. Conducting experiments
d. Making observations and collecting data
6. What do you call a series of logical steps that is followed in order to solve a problem?
a. Model
b. Method
c. Scientific theory
d. Scientific method
7. How do scientists test their hypotheses?
a. Designing models
b. Doing experiments
c. Drawing conclusions
d. Formulating questions
8. Which of the following cannot be broken down into simple substances?
a. Chemical formula
b. Compound
c. Element
d. Mixture
9. Which of the following is not an example of an element?
a. Helium gas
b. Hydrogen
c. Ice
d. Iron
10. Which of the following statements is true about elements and compounds?
a. Homogeneous in nature
b. Simplest form of matter
c. Commonly and naturally occurring materials
d. Can be broken down into simpler substances
11. Which of the following substances is not a compound?
a. Carbon dioxide
b. Hydrogen
c. Salt
d. Sugar
12. Which of the following describes an element?
a. The simplest substance
b. It can be broken down into other types of substances
c. It can be separated through a chemical process
d. It is composed of two or more types of atoms
13. Which of the following statements correctly describes a compound?