Grade 7 - Diagnostic Test 2023 / T1

Which of the following chemical formulas represents a compound? 

• C₃

• O₂

• CH₃CHO

• H₂

Which of the following represents an element?

• H₂O

• H₂

• NaCl

• CaCO₃

The _____is the part that gets dissolved. 

• solute

• solvent

• solution 

• Sacajawea 

Many cleaning solutions are bases. Which of the following is a property of most bases?

• feels slippery

• white color

• can only be liquid

• tastes sour

The most commonly used solvent in food is ___

• sodium chloride

• vinegar

• water 

• citric acid

Who is this Scientist gives this theory about that all plants made of cells.

• Schleiden

• Schwann

• Virchow

• Brown

Who is this Scientist gives this theory about the First to see cells dividing - all cells come from pre-existing cells

• Schleiden

• Schwann

• Virchow

• Brown

Who is this Scientist gives this theory about the first to observe a nucleus in plant cell

• Schleiden

• Schwann

• Virchow

• Brown

What is the main function of the chloroplasts found in plant cells?

• to manufacture chemical energy from food

• to remove waste materials

• to absorb light energy and make food

• to control the shape of the cell

Which is found in BOTH animal and plant cells?

• cell wall

• chloroplast

• mitochondria

• lysosome