Plant and Chemical Reactions Quiz

What is the pathway through which water enters a plant?

• Through leaves

• Through the roots

• Through the flowers

• Through the stem

Which substance enters a plant along with water?

• Oxygen

• Nitrogen

• Mineral salts

• Carbon dioxide

Water is lost from a plant through organs called _______. This process is called _______.

• roots, absorption

• stems, conduction

• leaves, transpiration

• flowers, respiration

What is the name of the equipment used to react powdered calcium carbonate with dilute acid?

• Beaker

• Conical flask

• Test tube

• Measuring cylinder

Why does the total mass of reactants equal the total mass of products in a reaction?

• Mass is gained

• Mass is lost

• Mass is conserved

• Mass is doubled

After a reaction in a closed container, the mass inside is less than before. Why?

• Some reactants stick to the container

• Gas is released and escapes

• Reaction absorbs matter

• Container evaporates

How does using large pieces of calcium carbonate affect rate of reaction compared to powdered calcium carbonate?

• Increases

• Decreases

• Stays the same

• Stops completely

Why does the hand feel cold when water evaporates from it?

• The temperature of the water increases

• The water absorbs heat from the hand

• Water releases heat

• Air warms the skin

An ionic bond is formed between which types of atoms?

• Two metals

• Two non-metals

• Metal and non-metal

• Two noble gases

How does a magnesium atom form a magnesium ion, Mg²⁺?

• It gains two electrons

• It loses two electrons

• It shares two electrons

• It breaks apart