1. Matthew and Vincent were looking at the results of their experiment with glue. They noticed that wood holds tighter together with wood glue than with school glue. They learned that wood glue is best when working with wood,

What part of the scientific investigation is this called?

A conclusion C. hypothesis B. data
D. problem

2. Which of the following substances is an element?

A. ammonia B. carbon dioxide C. oxygen D. water

3. Which of the following examples of matter is a mixture?

A. air B. copper C. salt D. vinegar

4. It is a solution that contains less than the maximum amount of solute that is capable of being dissolved.

A. Solid Solution C. Saturated Solution
B. Liquid Solution
D. Unsaturated Solution

5. What is the percentage concentration of 250 grams of flour added to 500ml water?

A. 33.33% C. 75.00% B. 50.00% D. 100.00%

6. Which two parts of the compound microscope magnify the image of an object?

A. eyepiece and mirror
C. objectives and mirror
B. eyepiece and objectives
D. objectives and diaphragm

7. What is the total magnification of the object using a 10x ocular lens and a 40x objective lens?

A.40x B.100x C.400x D.4000x

8.which of the following statement is TRUE?

A.Groups of organs working together are called cell.
B.Groups of cells working together are called organisms.
C.Groups of organs working together are called organisms.
D.Groups of organs working together are called organ systems.

9.What are the two features that plant cell has and animal cell does not have?

A.iysosome and cell wall
B.cell wall and chloroplast
C.cell membrane and nucleus
D.mitochondria and ribosomes

10. Which of the following statements does NOT explain why cell is considered the structural and functional unit of life?

A.all living things are formed of cells.
B.they are found in all animals but not in all plants.
C.cells give form and structure, process nutrients and make it into usable energy.
D.cells are very important for performing various life processes which are required for sustaining life on earth
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