10SCI NCEA Level 1 Revision

What seperation method does this diagram represent?

What seperation method does this diagram represent?

What does this diagram show?

What does this image show?

Name the equipment and the seperation method. Equipment names: filter funnel, filter paper, conical flask, filtrate,

Hydrochloric acid + lithium hydroxide = lithium chlorate + water. Hint: look at the spelling carefully!

Sulphuric acid + potassium hydroxide = potassium sulphate + water.

Nitric acid + sodium hydroxide = nitric sodiumoxide + water.

Nitric acid + beryllium hydroxide = beryllium chloride + water.

What are possible pH values for acidic substances?

What are possible pH values for neutral substances?

What are the possible pH values for basic (alkali) substances?

Foods webs/chains have to start with a... [More than one right answer!]

Ways that marine [blank_start]ecosystems[blank_end] are affected by chemical spills: - Habitats of [blank_start]organisms[blank_end] are destroyed, so they have no [blank_start]shelter[blank_end] and die. - [blank_start]Oil[blank_end] or similar pollutants coats the animal, so it can no longer catch [blank_start]pray[blank_end]. As a result, it will [blank_start]starve[blank_end] and die. - The food source of predators is [blank_start]reduced[blank_end], which [blank_start]affects[blank_end] all the organisms in the web.

When comparing filtering, evaporating, and decanting, which seperation methods could be described by each statement? a. Seperates an insoluble solid from a liquid. [blank_start]Filtering & Decanting[blank_end] b. Seperates a soluble solid from a liquid. [blank_start]Evaporating[blank_end] c. Uses different densities to seperate. [blank_start]Decanting[blank_end] d. Uses differing boiling points to seperate. [blank_start]Evaporating[blank_end] e. Uses different particle sizes to seperate. [blank_start]Filtering[blank_end] f. Can be used to seperate two different liquids. [blank_start]Decanting & Evaporating[blank_end] g. Both substances are collected when seperated. [blank_start]Decanting & Filtering[blank_end]

Neutralisation is when an acid reacts with just enough [blank_start]base[blank_end] to form a [blank_start]solution[blank_end] with a [blank_start]pH value[blank_end] of exactly 7.

A mixture of sand and salt needs to be separated into individual piles. Put these steps in the appropriate order: 1. [blank_start]Add water[blank_end] 2. [blank_start]Decant the mixture[blank_end] 3. [blank_start]Filter the mixture[blank_end] 4. [blank_start]Heat the mixture over a Bunsen Burner[blank_end]

Biodiversity is the [blank_start]measure[blank_end] of the [blank_start]varirety[blank_end] of all different [blank_start]species[blank_end].

Label the parts of the flower. Words: style, stigma, ovary, anther, ovule, filament, sepal, petal. [Note: the ovule is the dot ON the ovule. The ovary is the dot in the ovary-area, but not on the ovules. To clear any confusion with the labels.]

Complete the equation showing neutralisation: Acid + base > [blank_start]salt[blank_end] + [blank_start]water[blank_end]

Write an equation for calcium sulfate. [blank_start]Sulfuric acid + calcium hydroxide[blank_end]

Make an equation for iron chloride. [blank_start]Hydrochloric acid + iron hydroxide[blank_end]

Make an equation for magnesium nitrate. [blank_start]Nitric acid + magnesium hydroxide[blank_end]

A food web is many food [blank_start]chains[blank_end] joined together. Arrows on a food web show the [blank_start]flow[blank_end] of energy from one [blank_start]organism[blank_end] to the next. All food chains start with [blank_start]producers[blank_end]. Words: organism, flow, producers, chains.