Year 7 Laboratory Equipment - Mr. Hung

The correct answer is funnel because a funnel is a piece of lab equipment that is used to channel liquid or fine-grained substances into containers with small openings. It has a wide top and a narrow bottom, allowing for easy pouring and minimizing spills. It is commonly used in chemistry experiments and filtration processes.

The given piece of lab equipment is called a dropper.

The correct answer is "bosshead and clamp" because these are the names of the lab equipment being described. A bosshead is a device used to hold a clamp in place on a stand or rod, while a clamp is used to secure objects such as test tubes or burettes. Therefore, the combination of a bosshead and clamp is the correct name for this piece of lab equipment.

The given answer "crucibles and lids" is the correct name for the piece of lab equipment being described. A crucible is a small, heat-resistant container used for heating substances to high temperatures. It is typically made of porcelain or metal. Lids are used to cover the crucible and prevent the contents from spilling or evaporating. Together, crucibles and lids are commonly used in laboratory settings for various purposes, such as heating, melting, or evaporating substances.

When working with acids, bases, and open flames, it is important to protect your eyes from potential hazards. Safety goggles provide a barrier between your eyes and any splashes, spills, or fumes that may occur during the experiment. They are designed to be impact-resistant and provide a tight seal around the eyes to prevent any harmful substances from reaching them. Therefore, safety goggles are necessary to ensure the safety and well-being of the person working with these substances and equipment.

The given piece of lab equipment is a thermometer, which is used to measure temperature. It is commonly used in scientific experiments and is essential for monitoring and controlling temperature in various processes. Thermometers are typically made of glass and contain a liquid, such as mercury or alcohol, that expands or contracts with temperature changes, allowing for accurate temperature readings.

The correct answer is Bunsen burner. The Bunsen burner is a piece of lab equipment commonly used in chemistry experiments. It is a gas burner that produces a single open flame, which can be adjusted to control the temperature. The burner is named after its inventor, Robert Bunsen, and is widely used in laboratories for heating, sterilizing, and combustion purposes.

The given piece of lab equipment is called a test tube brush. This brush is specifically designed to clean test tubes, which are commonly used in laboratories for various experiments and analyses. The bristles of the brush are flexible and narrow, allowing it to reach the bottom and sides of the test tube effectively. It is an essential tool for maintaining cleanliness and hygiene in the laboratory.

The correct answer is conical flask because it is a piece of lab equipment that is used for holding and measuring liquids. It has a conical shape with a narrow neck and a flat bottom, making it ideal for mixing, heating, and storing liquids. The other options, such as beaker, measuring cylinder, and funnel, are also lab equipment but they have different shapes and purposes.

The correct answer is evaporating dish. An evaporating dish is a piece of lab equipment used for heating and evaporating liquids. It is usually made of porcelain or glass and has a shallow, wide shape which allows for quick evaporation. It is commonly used in chemistry experiments to concentrate solutions or separate dissolved solids from liquids through evaporation.

The correct answer is beaker. A beaker is a common piece of lab equipment used for holding, mixing, and heating liquids. It has a cylindrical shape with a flat bottom and a pouring lip, making it easy to pour liquids without spilling. Beakers come in various sizes and are usually made of glass or plastic. They are commonly used in chemistry experiments and are essential for measuring and transferring liquids.

The given options are names of different lab equipment. Out of all the options, "cavity tile" is the correct answer.

The correct answer is "spatula." A spatula is a piece of lab equipment used for mixing, spreading, and transferring substances. It typically has a flat, thin blade and a long handle. It is commonly used in chemistry and biology labs for tasks such as scraping solid materials, transferring small amounts of chemicals, or spreading substances on a surface. A stirring rod is a long, thin rod used for stirring liquids. A thermometer is used to measure temperature. Since the question asks for the name of the lab equipment, the correct answer is spatula, not thermometer or stirring rod.

A watch glass is a piece of lab equipment that is used to hold small amounts of substances. It is a circular, concave-shaped glass dish with a slight lip around the edge. It is called a "watch glass" because it was originally used to cover and protect pocket watches. In the lab, it is commonly used for evaporating small amounts of liquid, as a cover for beakers or petri dishes, or as a surface for weighing and transferring solids.

A measuring cylinder is the best instrument for measuring the volume of the equipment listed because it has a narrow and uniform diameter, allowing for more accurate measurements. It also has clear markings and a spout, making it easier to pour liquids in and out without spillage. The beaker and conical flask have wider openings and are not as precise for volume measurements. The evaporating dish is not designed for measuring volume but rather for evaporating liquids.

The correct answer is "electronic balance" because it is a piece of lab equipment used to measure the mass of an object with high precision. It is an electronic version of a traditional balance and typically has a digital display to show the weight measurement.

The given piece of lab equipment is called a measuring cylinder. It is used to measure the volume of liquids accurately. It has a narrow cylindrical shape with markings on the side to indicate the volume. The other options, such as test tube, beaker, and conical flask, are different types of lab equipment that serve different purposes. A test tube is a small cylindrical tube used for holding and mixing small amounts of liquids. A beaker is a cylindrical container with a flat bottom and a pouring spout, used for holding and mixing larger amounts of liquids. A conical flask is a flask with a conical shape, used for heating and mixing liquids.

The correct answer is "test tube rack" because it is a piece of lab equipment specifically designed to hold multiple test tubes in an organized manner. It provides stability and prevents the test tubes from tipping over or rolling off the working surface.

Wire gauze is a piece of lab equipment used to support a container (such as a beaker or flask) during heating. It is made of a mesh of metal wires, typically woven in a square pattern. The wires provide stability and even distribution of heat, preventing direct contact between the container and the heat source. This helps to prevent overheating or breaking of the container. The wire gauze is commonly used in chemistry experiments that involve heating substances over a Bunsen burner or other heat source.

The given lab equipment is called a stirring rod. A stirring rod is a long, thin, cylindrical tool used in laboratories to mix or stir substances in a container. It is typically made of glass or plastic and has a rounded or flattened end for effective stirring. It is commonly used in chemistry experiments to ensure uniform mixing of solutions or to help dissolve solids in liquids.