Grade 11 Science Reviewer

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products? a. the product is doubled b. the mass changes depending on the reaction c. the product is half the mass of the reactants d

The vessel for water a. phloem b. xylem c. a and b d. none of the above

In humans, a diploid cell has ___________ chromosomes. a. 23 b. 46 c. 22 d. 1 set

The transfer of pollen grain from the anther to the stigma is called ____________. a. fertilization b. pollination c. germination d. mutation

When producing a soluble salt in a reaction between an acid and an alkali, how can you prepare dry solid crystals from the solution? a. condensation b. filtration c. evaporation/ crystallization d. neutralization

The product of acid + base yields salt and _____________. a. water b. hydrogen c. oxygen d. carbon dioxide

What is the number before a chemical formula called? a. coefficient b. subscript c. superscript d. co-numbers

Where in the plant cell does photosynthesis happen? a. vacuole b. vascular bundles c. chloroplast d. chlorophyll

The reaction XY ⟶ X + Y is an example of _____. a. synthesis b. combustion c. decomposition d. replacement

The law of conservation of mass states that a. matter can be made b. matter can be destroyed c. matter can be destroyed and can be made d. matter can neither be made or destroyed

In starch test, the iodine in the leaves turns _________ which indicates the presence of starch. a. green b. blue black c. red

What element does every combustion (fire) reaction have to have? a. carbon b. hydrogen c. nitrogen d. oxygen

What type of reaction best describes the equation below? Zn + H2S -- ZnS + H2 a. decomposition b. double replacement c. single replacement d. decomposition

. Chlorophyll is: a. The substance that makes plants green. b. Found inside the chloroplast cells. c. Used to absorb energy from the sun. d. all of the above

Sex cells are generally called _______. a. zygote b. diploid c. haploid d. gametes

A negative acceleration means that your object is a. at rest b. constant speed c. speeding up d. slowing down

The stomata are openings in the leaf which allow for gas exchange. Which cells found either side of the opening control the stomata? a. guard cells b. mesophyll palisade c. spongy palisade d. all of the above

Which of the following pairs is mismatched? a. Carpel - Produces pollen grains b. Stigma - Receives pollen grains c. Anther - Produces microspores d. Ovary - Develops into fruit

in litmus , alkali solution turns to _________ color.

The process by which one or more substances change to produce one or more different substances a. chemical process b. chemistry c. chemical reaction d. chemical reactant